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Phone Addiction Scientist: Doing This Gives You An Hour Back Every Day! | Dr Sahar Yousef

The Diary Of A CEO with Steven Bartlett

Hosted by Steven Bartlett

2h 13m
Transcript

Original podcast

Summary

Written by a model from the transcript; not yet reviewed.

This episode features a discussion on productivity, human performance, and attention with Dr. Sahar Yousef, a cognitive neuroscientist from UC Berkeley and founder of the Becoming Superhuman Lab. The conversation explores how modern technology is deliberately engineered by behavioral neuroscientists to maximize engagement and distract users, likening the tech industry's playbook to the food industry's use of sugar. Dr. Yousef and the host examine why multitasking is a myth that severely damages productivity, why the brain is fundamentally a monotasking machine, and how constant notifications and infinite scrolls create an illusion of social and intellectual connection while causing loneliness and brain fog. Practical strategies are provided for reclaiming time and focus, including setting phones to grayscale, establishing VIP notification filters, and structuring work into specific focus sprints using granular execution lists.

  • Switching attention between tasks wastes significant time and productivity, as the human brain functions as a monotasking machine. 1:21
  • Switching a phone's display to grayscale reduces neurological stimulation and can save an average of one hour of screen time daily. 45:23
  • Technology platforms use infinite scrolls and variable rewards to keep users engaged, mirroring the way processed foods exploit biological cravings. 41:19
  • Structuring deep work into focus sprints with clear, granular outputs helps double productivity while reducing mistakes. 56:48
  • Circadian rhythms vary across individuals, meaning cognitive performance peaks at different times depending on genetic chronotypes. 1:39:36

Chapters

  1. 0:00
    Zero Platform Intro & Productivity Myth

    The host introduces Zero, an all-in-one accounting platform, and debunks the myth of multitasking, highlighting the productivity cost of constant attention switching.

  2. 1:21
    Phone Addiction Science & Time Loss

    The conversation shifts to the science behind phone addiction, quantifying the two hours per day lost to screen switching and the impact on productivity.

  3. 2:07
    Foundational Productivity Toolkit

    The host outlines the core tools of the productivity kit: phone in grave, grayscale mode, long‑form content, and focus sprints tied to chronotypes.

  4. 3:44
    Mission of Dr. Sahar Youssef

    Dr. Youssef explains her mission to bring neuroscience‑based productivity education, emphasizing the need to align work habits with biological laws.

  5. 15:39
    Digital Hygiene & Phone Lockbox

    Strategies for reducing digital distraction are discussed, including creating a phone lockbox, disabling notifications, and filtering VIP alerts to preserve focus.

  6. 46:49
    Phone Addiction and Time Recovery

    Steven introduces the idea that a single small change can reclaim an hour each day, setting the stage for a deeper exploration of phone addiction.

  7. 48:22
    Attention Span Decline and Social Connection

    The hosts discuss how fragmented attention affects learning, relationships, and overall well‑being, urging a return to deeper, face‑to‑face interactions.

  8. 53:08
    Portion Control and Friction Techniques

    Strategies such as phone parking lots, turning off notifications, and creating friction are presented to reduce digital distraction and reclaim focus.

  9. 56:48
    The Focus Sprint Methodology

    Sahar explains the five‑step focus sprint framework, emphasizing goal setting, task breakdown, and time blocking to double productivity and reduce errors.

  10. 1:15:18
    MITs, LITs, and the Progress Principle

    The dialogue explores the distinction between Most Important Tasks and Least Important Tasks, and how breaking them into small steps fuels motivation and progress.

  11. 1:19:35
    Noise Management and Brain Breaks

    Techniques for managing auditory distractions, using noise‑cancelling headphones, and choosing effective brain breaks—especially nature exposure—are discussed.

  12. 1:23:48
    Time Allocation and Intentional Living

    The hosts reflect on how intentional time use shapes life outcomes, advocating for deliberate scheduling, timer use, and prioritizing meaningful activities over endless scrolling.

  13. 1:32:09
    Brain‑State Switching for Innovation

    Explains how stepping away from a problem loosens neural networks and sparks creative insights.

  14. 1:34:26
    Negative Thinking and Rumination

    Discusses how rumination deepens neural patterns and offers strategies to redirect attention.

  15. 1:37:23
    The 1% Diary Framework

    Introduces the 1% diary system for breaking big goals into tiny, actionable steps.

  16. 1:38:40
    Chronotypes and Optimal Timing

    Explores AM, PM, and biphasic chronotypes and how they influence focus and productivity.

Highlights

  • 1:28

    The Hidden Cost of Multitaskingdata

    The guest explains that the average knowledge worker spends over two hours a day bouncing between screens and tasks, destroying productivity through attentional switching.

  • 19:55

    Default Settings Maximize Engagementinsight

    Tech products and apps are deliberately engineered by behavioral scientists to maximize user engagement and profit rather than user productivity.

  • 39:26

    The Science of Variable Rewardsinsight

    Humans and animals become more addicted to rewards when they are intermittent and variable rather than consistent, which explains the addictive nature of social media algorithms.

  • 45:23

    Grayscale Reduces Screen Timedata

    Laboratory research shows that switching mobile phones to grayscale makes them less neurologically stimulating, leading people to spend one hour less on their phones daily.

  • 1:34:50

    The Trap of Ruminationinsight

    Constantly rehashing and talking about past traumas or negative thoughts only serves to deepen the neural networks, making the rumination stronger and harder to break.

  • 1:40:05

    Understanding Human Chronotypesinsight

    Humans do not share a single circadian rhythm, with about 25 percent being morning-shifted and roughly 16 percent being evening-shifted, which dictates ideal times for peak cognitive performance.

  • 2:04:17

    Proving the Myth of Multitaskingstory

    A live test demonstrates that alternating between writing letters and numbers drastically reduces speed and execution quality compared to focusing on one task at a time.

Quotes

  • “So on a daily basis theoretically, I'm losing 60% of my productivity just by switching between two different types of tasks at once.”
    Steven Bartlett · 1:21
  • “And we saw on average, people spent one hour less on their phones every single day.”
    Unnamed speaker · 2:13
  • “If you're not getting enough sleep, it's impacting your cognitive performance, your emotional regulation.”
    Unnamed speaker · 15:06
  • “The default settings are here to help them make money off of your attention and your time.”
    Unnamed speaker · 45:41
  • “And all I did was turn their phones into gray and ask them to stay in gray for three weeks. That's it.”
    Unnamed speaker · 46:30
  • “When you go running, you talk to these busy people. They're like, oh yeah, I'm trying to do this. I want to read that book. I want to listen to your podcast, Stephen, but I just don't have the time.”
    Unnamed speaker · 46:48
  • “Short form content has even been shown, by the way, in some cases to increase attention span.”
    Unnamed speaker · 47:22
  • “Long form content, like a film, like a good film, has been shown to increase empathy in young people. Just think about that.”
    Unnamed speaker · 47:33
  • “You are far less likely to lose yourself scrolling until 2 o'clock in the morning and then feeling like shit the next day because you didn't get enough sleep.”
    Unnamed speaker · 50:41
  • “The best way to increase the signal or to get to X, whatever it may be, is to remove obstacles as opposed to adding.”
    Unnamed speaker · 1:18:53
  • Zero 0:16–0:57
  • ketone.com 55:00–55:24
  • LinkedIn 55:55–56:21
  • thediary.com 1:37:27–1:38:32
  • mmminstitute.org 2:13:02–2:14:15
  • Zero 2:15:12–2:15:54

About this episode

Are you trapped in a cycle of digital distraction, and brain fog despite working harder than ever? Dr. Sahar Yousef reveals how to take back control of your attention, stop digital addiction, and unlock your true cognitive potential. Dr. Sahar Yousef is a renowned cognitive neuroscientist, professor at UC Berkeley, and the founder of the Becoming Superhuman Lab. She specializes in cognitive neuroplasticity, human performance, and optimizing the biological operating systems of the brain. Her ground-breaking research focuses on building practical frameworks that help high-performers achieve extreme focus, strategic automaticity, and deep workflow mastery without burning out. In this episode, she explains: ■ The Attention Trap: Technology platforms are deliberately engineered by behavioral neuroscientists to maximize engagement and exploit your brain's survival wiring rather than support your productivity. ■ The Grayscale Hack: Switching your phone's color to grayscale significantly reduces neurological stimulation and can instantly reclaim hours of your scrolling every single week. ■ The Focus Sprint: Breaking your major goals down into granular execution lists with strict time blocking allows you to leverage anticipatory brain networks and double your output. ■ The Myth of Multitasking: Task-switching creates severe attentional baggage that drains your cognitive energy and makes you up to 60% slower than monotasking. ■ The Power of Boredom: Why allowing your mind to wander is the vital mechanism that activates neural network problem-solving and produces your best creative insights. Chapters 00:00:00 Intro 00:02:27 What's Holding Us Back Today? 00:06:48 Why Should We Listen To You? 00:08:20 What's Stopping Us From Being Productive? 00:12:14 The Productivity Toolkit 00:14:17 Why Is Focus Essential For Your Health? 00:17:34 Does Productivity Software Actually Work? 00:21:50 Why Do We Feel Pressured To Reply Instantly? 00:24:58 How To Separate Signal From Noise 00:27:20 Why The Modern World Fights Our Biology 00:29:11 How To Stop Avoiding Discomfort 00:32:40 How Big Tech Hijacks Your Brain 00:43:52 How To Break Phone Addiction 00:53:17 Ads 00:55:19 The Focus Sprint: How To Double Your Productivity 01:00:48 How To Prioritise Tasks: MITs Vs. LITs 01:04:29 How To Find Your Goals: Finding Your Everest 01:08:42 What Creates True Human Connection? 01:13:52 Why Small Steps Work Better 01:17:46 How To Avoid Distractions: Should You Work To Music? 01:19:58 Do Productivity Timers Actually Work? 01:24:50 Why Boredom Is Good For You 01:30:49 How To Spark Creative Ideas 01:33:17 How To Stop Overthinking And Negative Thoughts 01:36:18 Ads 01:37:27 How To Find Your Chronotype 01:46:11 How Big Tech Manipulates The Public 01:51:21 What Tech Companies Hide About AI 01:55:44 Why Is Thinking For Yourself Getting Harder? 01:59:52 Why Multitasking Doesn't Work 02:05:52 How To Become Luckier In Life Follow Dr. Sahar Yousef: YouTube - https://link.thediaryofaceo.com/1wlOOZy Instagram - https://link.thediaryofaceo.com/8bkc1Uq LinkedIn - https://link.thediaryofaceo.com/9DlHLga TikTok - https://link.thediaryofaceo.com/FyYDi72 Facebook - https://link.thediaryofaceo.com/1zDXa74 Go to MMM Institute - https://link.thediaryofaceo.com/t7Wy1O to take the Digital Dependence Index, test your attention span, and more. You will get your personal results and see how you compare to others, while contributing to global open research. Go to MyChronotype - https://link.thediaryofaceo.com/51zrfNX to take the chronotype assessment for free use the code: DOAC Independent Fact Check: https://stevenbartlett.com/wp-content/uploads/2026/10/DOAC-Dr-Sahar-Yousef-Independent-Research-Further-Reading.pdf The Diary Of A CEO: ◼ Join DOAC circle here - https://doaccircle.com/ ◼ Buy The Diary Of A CEO book here - https://link.thediaryofaceo.com/BWjLTZK ◼ Shop The Diary Of A CEO collection: https://thediary.com/collections/shop ◼ Get email updates - https://link.thediaryofaceo.com/5IB1H6E ◼ Follow Steven - https://link.thediaryofaceo.com/AGU9QP4 Sponsors: Ketone - https://ketone.com/STEVEN for 30% off your subscription order Linkedin Talent Solutions - http://linkedin.com/DOAC

Transcript

0:00
2:13:52

25,607 words · 2 speakers

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

Topics

  • Focus sprint
  • The Diary
  • TikTok
  • The Diary Of A CEO
  • Chronotypes
  • infinite scroll
  • variable rewards
  • Atomic Habits
  • UC Berkeley
  • grayscale

Page updated · transcript and summary are machine-generated