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Brain Doctor: Why You Can't Stop Worrying Even When Nothing Is Wrong
22 July 2026

Brain Doctor: Why You Can't Stop Worrying Even When Nothing Is Wrong

Live Well Be Well with Sarah Ann Macklin | Health, Lifestyle, Nutrition

About

This week I'm joined by David Rock, neuroscientist, author and founder of the NeuroLeadership Institute, and someone who has spent 28 years answering one of the most fascinating questions in science:Why do we do what we do? And how can understanding our brain change everything?

We explore human behaviour, the neuroscience of threat and reward, and what it really means to work with your brain rather than against it.

Dr. David Rock coined the term neuroleadership and is the Co-founder and CEO of the NeuroLeadership Institute (NLI). The Institute is a 23-year-old cognitive science consultancy that has advised over 50% of the Fortune 100.ย  With operations in 24 countries, the institute brings neuroscientists and leadership experts together to make organisations better for humans through science.

What we explore together:

    Why the brain is always making a threat or reward decisionย 

    What the SCARF model is and why it explains almost every difficult human interaction

    Why being interrupted feels physically painful and what your brain is actually doing

    How insights really work in the brain and why your best ideas come when you stop trying

    Why one negative comment can override dozens of positive ones and how to rewire that

    What sleep, glucose and rest actually do to your ability to think clearly

    Why status is one of the most powerful forces driving human behaviour and how to work with it

Love, Sarah Ann ๐Ÿ’›

My book 'Healthy Shouldn't Be This Hard': https://www.amazon.co.uk/Healthy-Shouldnt-Be-This-Hard-ebook/dp/B0G1DHNRV5

This episode is sponsored by:NOWATCH: The compassionate health tracker Connecting body and mind with unique stress recovery insights so you can live fully today๐Ÿ‘‰ 15% off with code LWBW15 at https://nowatch.com/

The Great British Veg OutHow to support your gut, energy, and hormones by eating more โ€” not less.๐Ÿ‘‰ https://sarahmacklin.substack.com/p/tโ€ฆ

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Chapters

00:00 Introduction

02:55 How David discovered the brain's threat and reward system

06:08 Why we avoid bad things more than we seek good ones

09:00 What happens to your brain when you're overwhelmed

12:02 Brain fog โ€” what it actually is and why it happens

14:58 The prefrontal cortex and why it matters so much

18:00 Why being interrupted is so disruptive to the brain

20:54 The difference between direct experience and narrative thinking

23:49 How to shift your brain into a better state

27:02 The science of insight โ€” where great ideas really come from

29:47 Why your best thinking happens away from your desk

33:02 How much information the brain can actually handle

36:02 The negativity bias โ€” why bad news hits harder than good

38:57 One negative comment vs dozens of positive ones

42:08 What happens in the brain when someone fails

44:58 How to spot where your attention really goes

47:57 Why rest is not optional for a high performing brain

51:08 Sleep, glucose and what they really do to your thinking

54:06 When you can't switch off โ€” what the brain needs

57:07 Why doing nothing feels so hard โ€” and why it matters

60:00 The SCARF model โ€” status, certainty, autonomy, relatedness, fairness

62:52 Why inequality triggers such a strong brain response

66:04 The neuroscience of emotion and why it matters

69:08 Humour, connection and the brain