You Are Not the Only Variable: When to Change Yourself and When to Change Your Environment | John R. Miles - EP 816

In this solo episode 816, John R. Miles brings together two powerful ideas from his conversations with Angela Duckworth and Jared Diamond to explore a question that most of us rarely stop to ask: when does the situation shape the outcome, and when are we the person who uniquely matters?

Speaker names marked ? are inferred from speaking time and the show’s known hosts — they are not voice-verified.

• 0:02John R. Miles?

  Hey friends, what if your biggest problem isn't that you're not doing enough, but that you've spent too long proving that you are enough? You can be successful, needed, and surrounded by people and still feel completely unseen. That's the problem I explore in my new book, The Mattering Effect. I show you how we become hyper-visible for what we produce while quietly becoming invisible to ourselves, and introduce the matter framework to help you reclaim meaning, autonomy, trust, time, energy, and reciprocity. Stop auditioning for your worth, start living from it. The Mattering Effect is available for preorder now at matteringeffect.com. There were 96 United States senators the year Harry Truman became president.

• 0:42John R. Miles?

  Historians believe that 95 of them could have done his job just as well as he did. Somewhere in your own life right now, there's a version of you just as replaceable, showing up to do something almost anyone in your seat would have done anyway. And there's another version of you in a different room that nobody on earth could ever replace. Today, we're going to figure out which one you were this week. It's your friend John, and welcome to Passion Struck. I'm so glad you're here. Whether you're a longtime listener or someone who just discovered the show, thank you for pressing play today.

• 1:23John R. Miles?

  Maybe you've felt the life you were supposed to want, but you've quietly wondered why it still doesn't feel like enough. If that's you, you're in the right place. Every week, I sit down with the world's top scientists, researchers, and thinkers to uncover what it actually takes to build an intentional life that matters. Thanks for joining me. Let's get into it. Welcome back to episode 816 of Passion Struck. We're closing out week one of a brand-new series, The Adaptive Human: How We Thrive in a Changing World. Before we get back to those 95 replaceable senators, I want to tell you where I actually

• 2:08John R. Miles?

  was for the last two weeks. Because it's the reason I did two interviews the past two weeks, and it's the reason that question isn't abstract to me right now. I spent two weeks up in Blue Ridge, Georgia, secluded in a cabin, boating on Lake Notley, hiking to waterfalls I'd never seen before. No calendars, no notifications, no version of my normal life. Somewhere around day four, I noticed something that bothered me a little, if I'm honest. I felt like a better version of myself than I'd felt like in months.

• 2:50John R. Miles?

  Clearer, slower, more patient. And none of that was because I tried harder to be that person, it was because I wasn't in the same environment anymore. I got home Saturday night. And this week, the same week we launched this series, the same week you heard from both of this week's guests, has been my live test of whether any of that actually stuck. I think what actually happened up there is that I got situated. That word isn't an accident. It's the title of a new book that landed this very week from a guest you heard right here on Tuesday, Angela Duckworth.

• 3:34John R. Miles?

  Her whole argument after a career spent studying grit is that grit was never the whole story. You can have all the willpower in the world and still lose to a bad situation. Sometimes the answer isn't trying harder, it's standing somewhere else. Which is a nice, tidy truth when you're talking about a lake in Georgia. It gets a lot less tidy when you scale it up, which is exactly where Thursday's conversation took us. Because the same week I was reading advanced pages of Angela's book, I was also sitting down with Jared Diamond, who asks almost the identical question, but not about a person

• 4:18John R. Miles?

  on vacation, about the people who shaped history. So here's what today is actually about. Two books from two completely different fields, landing in the same week, both circling one uncomfortable question. When does the person actually matter? And when is it really just the room? You already heard both of them make their individual cases this week. Today, I want to put those two conversations next to each other and next to my own very ordinary week, and see what falls out. And by the end of this episode, I'm going to give you one tool for telling the difference in your own life. I call it the fit check.

• 5:03John R. Miles?

  Two questions, it takes about 10 seconds, and I already ran in on myself this week, so I'll tell you exactly what it told me. Here's what's ahead. What Angela Duckworth told me about the moment she realized grit was never the whole story, and the Fortune 500 story that proved it to her. A term one Stanford researcher used in her book that sounds almost exactly like something I've spent two years building a book around. The test Jared Diamond uses to figure out if a leader actually mattered, and what happened when I turned that same test on myself this week, and the honest answer to whether that mountain version of me made it home. Let's get into it.

• 5:47John R. Miles?

  Thank you for choosing Passion Struck and choosing me to be your host and guide on your journey to creating an intentional life that matters. Now, let that journey begin. Let's start with the obvious question about Blue Ridge, Georgia. Was I actually a better person up there, or did I just have fewer problems for two weeks? I've been turning that question over and over, and here's where I've landed. I don't think it's either. I think it's a third thing, and it's the premise Angela Duckworth built an entire book around. Duckworth is the Warden researcher who made grit a household word.

• 6:30John R. Miles?

  The idea that passion and perseverance predicts success better than raw talent does. That was her first book. Her new one, Situated, is her answer to a question that I asked her directly on Tuesday. What made her realize grit was necessary but not sufficient? Her answer traced back to graduate school and to an unglamorous academic book most people outside social science have never heard of. The Person in the Situation by Lee Ross and Richard Nisbet. Its argument in one sentence is the bedrock of modern social psychology. Who you are is one thing, where you are is a completely separate thing.

• 7:12John R. Miles?

  Think about the United States military economy at West Point. For decades, conventional wisdom viewed cadet basic training as the ultimate individual grit test. In any single year, Angela found that grittier cadets were indeed more likely to survive it. But when she examined the data across four decades, she noticed something unexpected. The completion rate steadily climbed without lowering admission criteria or physical standards. When Angela asked former superintendent General Robert Casslin how that was possible, his answer was immediate. It's not the cadets, it's the culture.

• 7:54John R. Miles?

  West Point had transitioned from an attrition model designed to weed the weak out to a developmental model designed to help cadets grow stronger. The cadets didn't arrive with deeper reservoirs of willpower. The institution redesigned the room, so the effort actually paid off. Dr. Aaron Beck, the father of cognitive therapy, whom close friends and colleagues like Angela knew simply as Tim, took this distinction even deeper late in his career. He observed that none of us possess a static, unyielding personality. Instead, our minds operate in what he termed "modes," reflexive states of being that click

• 8:38John R. Miles?

  into place depending on our fit with the immediate environment. In a hostile, micromanaged room, you click into a defensive survival mode. In a room that offers high challenge paired with high support, you click into your sweet spot. Alert, confident, and capable. The tragic mistake we make is assuming our sluggishness or cynicism is a character failure. Most of the time, though, the room simply called forth the wrong mode. Here's why that matters now, and why it links directly to the work I've spent the last years doing. While researching my upcoming book, The Mattering Effect, I sat down with Stanford psychologist

• 9:22John R. Miles?

  Jamil Zaki, who studies cynicism for a living. I brought him a question about the environments we all move through, and what came back stopped me cold. He told me we're living inside a marketplace. A system where almost every environment we enter, whether it's work, school, our churches, even our own families, quietly asks us to prove our worth before it will treat us like we have any. I want to be honest with you about why that phrase stopped me. It is essentially the exact idea I've spent the last decade building a book around. I call it the mattering market.

• 10:03John R. Miles?

  Same underlying diagnosis arrived at from a completely different angle. In a conversation Zaki didn't know I'd be connecting to a systemic pattern I'd already been circling for years. That's not a coincidence I take lightly. When two independent lines of research keep landing on the same invisible system, it's usually because the thing being described is actually there. So here's the first half of the tool I promised you. Before you assume a bad week is a character problem, ask, is this a bad day, or is this a bad room? Duckworth's answer, and increasingly mine, is that we spend far too much energy trying

• 10:44John R. Miles?

  to grit our way through rooms that were never built to let us succeed in the first place. Let's take a quick break. When we came back, the same question but scaled all the way up. Not, is this a bad room for me, but does the person in charge of the room even matter? Now, a quick break for our sponsors. Thank you for supporting those who support the show.

• 11:14John R. Miles?

  You're listening to Passion Struck right here on the Passion Struck Network. So, the room matters, sometimes more than the person standing in it. But that raises an uncomfortable follow-up question, and it's the one Jared Diamond spent all of Thursday's conversation trying to answer. Pulitzer Prize-winning author Jared Diamond has been asking a version of this question since before most of us were born, across geography, history, and now in his newest book, Leadership Itself. The book is called Profits, Profits, Coaches, and Kings, and the subtitle is the whole thesis in four words: When Do Leaders Matter?

• 11:59John R. Miles?

  If you were with us Thursday, you already heard him lay this out directly. When I asked him why he chose that word, "matter," because it's a word I think about constantly, his answer surprised me. He told me leadership actually breaks into three categories. Some leaders are uniquely qualified. Nobody else alive at that moment could have done what they did. Some leaders are talented but replaceable. Remove them, and someone functionally similar steps into the gap, and history barely notices. And some leaders, in his words, "simply didn't make a difference at all," wrong place, wrong

• 12:42John R. Miles?

  time, or wanting exactly what everyone else had already wanted anyway. Here's what I appreciated most about his answer. He refuses the easy version of this argument in either direction. He rejects the idea that history is just a parade of great men bending the world through sheer will. But he also rejects the opposite, the idea that leaders are nothing but prisoners of circumstance, interchangeable placeholders, the moment would have filled with or without them. The truth, he says, sits in the gap between those two stories, and it's different for every single case.

• 13:24John R. Miles?

  To actually locate that gap, Diamond uses something he calls the Hamlet test. The question is simple: Could someone else, living at that exact moment with the same opportunities, have done what this person did? He walked me through President Harry Truman as the test case. Truman became president by accident, essentially, thrust into the role after Roosevelt's death, with none of the traditional grooming for it. So, could anyone else have done what Truman did? Diamond's answer was blunt: 95 other people could have.

• 14:04John R. Miles?

  There were 96 sitting U.S. senators at the time, and most of them were more experienced and more distinguished than Truman was. Whether they'd have had his particular courage in the moment, nobody can know. But qualified to do the job, nearly all of them were. Then he ran the same test on Shakespeare. Could anyone else have written Hamlet? To even attempt it, you needed a theater company, years of experience, a string of earlier plays already under your belt. Shakespeare had all of that: Romeo and Juliet, Julius Caesar, already written and already great.

• 14:47John R. Miles?

  And Diamond pointed out something I didn't know: Historians can actually name the other 20 or so Elizabethan dramatists alive at that exact time. We have their plays. Some of them are genuinely good, but none of them are within a mile of Hamlet. Truman was replaceable. Shakespeare, not even close. Sit with that distinction for a second, because I think it's the sharpest tool in this entire episode, and it cuts in a direction that most self-help advice actually avoids. We like to believe that with enough effort, we become irreplaceable everywhere.

• 15:31John R. Miles?

  Diamond's research says that's simply not how it works. In some rooms, you are the Hamlet test. Nobody else could produce what you produce, and no amount of situational redesign is a substitute for you actually doing the work. In other rooms, you're one of 96 senators, talented, capable, and completely replaceable, no matter how hard you grind. The mistake almost all of us make is applying maximum effort in both kinds of rooms equally. Duckworth would tell you, "Sometimes the fix isn't more effort, it's a better room." Diamond would add the other half of the same coin.

• 16:16John R. Miles?

  And sometimes no room, however well-designed, will produce what only you can produce. So, stop looking for a better situation to hide the fact that the actual work is yours to do. So let's get back to where I started this episode, because I told you at the beginning I was going to look at whether my two weeks in Blue Ridge, Georgia, had a lasting impact on me. So the question becomes, was the mountain version of me in Blue Ridge a Truman or a Shakespeare? Here's my honest answer: Mostly Truman.

• 16:56John R. Miles?

  The clearer, slower, more patient version of me that showed up in Blue Ridge wasn't some rare, unrepeatable person only capable of existing on a mountain. Almost anyone would have gotten calmer with 14 days, no notifications, and alike. That version of me was replaceable by circumstance, which stings a little to admit, but it's actually the useful part, because it means the fix isn't become a fundamentally more disciplined person. The fix is Duckworth's fix: redesign the room. I don't need more grit at 8:00 PM tonight, when my phone starts buzzing.

• 17:40John R. Miles?

  I need to build a version of tonight that doesn't require grit in the first place. Phone in another room. A walk instead of a scroll. Dinner without a screen anywhere on the table. But here's where the Hamlet test earns its place in my life too, because there's a second half of this I can't outsource to my environment. Nobody else is going to sit down and write this episode. No one else is going to show up to be present with my wife tonight in exactly the same way only I can. In those specific rooms, I'm not one of 96 replaceable senators.

• 18:21John R. Miles?

  I'm the only person who can do that particular thing, and no amount of clever environment design lets me off the hook for actually doing it. That's the fit check in full. Two questions: Whenever you feel yourself grinding against something and not sure why it isn't working. One, if I remove myself entirely from this exact situation, would the outcome basically stay the same? If yes, stop gritting. The problem was never your character. Go redesign the room the way Duckworth redesigned her company floor.

• 19:01John R. Miles?

  Two, is there any version of this where the outcome depends specifically on me and no one else could produce it? If yes, no situation redesign will save you from that one. That's the Hamlet moment. That's where the actual work is yours. Most of what exhausts us is applying question two's intensity to question one's problems. We grit our teeth through bad rooms that were never going to reward grit while quietly underinvesting in the handful of moments only we can actually deliver. So here's where this leaves us. A mountain didn't make me a better person.

• 19:46John R. Miles?

  It removed a room that had been quietly working against me and revealed a version of myself that was there the whole time, which is exactly Duckworth's argument and exactly what she saw happen to an entire floor of employees the moment that she stopped micromanaging them. And the same test scaled all the way up is the one Jared Diamond has spent a career running on presidents, founders, and playwrights. Not was this person talented, but would this exact thing have happened without them? Sometimes the answer is yes. Sometimes the answer is a hard no.

• 20:30John R. Miles?

  Here's your assignment, and I want you to actually do it today, not just nod along. First, pick one thing that's been draining you lately and run question one. If you vanished from that exact situation, would the outcome basically stay the same? If yes, stop trying harder inside it. Go change the room instead, even something small. Duckworth didn't overhaul her whole company overnight. She stopped one bad habit at a time. Second, pick one thing today where you are genuinely the Hamlet test, where nobody else in your life can produce what only you can produce for the people around you, and give

• 21:14John R. Miles?

  that thing your actual full attention tonight, not the leftover attention after everything else. The real thing. This week, you got both halves of this conversation in full. If you missed Tuesday's episode with Angela Duckworth unsituated, or Thursday's conversation with Jared Diamond on Profits, Profits, Coaches, and Kings, go back and listen to both. Links are in today's show notes. Two books, one launch week, one very old question asked at two completely different scales, and I don't think today's episode fully lands without hearing them make their own cases first. Next Tuesday, I'm joined by one of the most influential psychologists of our time, Dr. Martin Seligman.

• 21:59John R. Miles?

  Marty is the founder of positive psychology, and he spent more than 60 years studying one of the most important questions in human flourishing: What gives us the belief that we can shape our own future? His remarkable new book, Agency: A Psychological History of Human Progress, traces the journey from learned helplessness to what he now sees as one of the most powerful forces in human life: The belief that tomorrow can be better than today, and that we have the ability to help make it so.

• 22:28Speaker 01

  Individual action is where things start, but whether or not it modifies the world, that is, you have mastery and agency, or it falls flat and you're helpless and you're non-agentic, is crucial to the shaping of the self and to flourishing. And in general, the more reciprocity, the more our actions produce upward spirals in the world, the more agency, the more flourishing we have.

• 23:08John R. Miles?

  If today's episode changed how you think about which battles are actually yours to fight, share it with someone who's been gritting their way through a room that was never going to reward it. Follow Passion Struck on Apple Podcasts, Spotify, or YouTube, and find this week's companion workbook through The United Life on Substack. And if you want to go deeper, where all of this fits into the bigger picture, my new book, The Mattering Effect, is available for preorder now wherever books are sold or at matteringeffect.com. Until then, remember, the life you leave behind will always be shaped by knowing which rooms to change and which moments will always going to require you. I'm John Miles, and until next time, live passion struck.