Neuroscientist and psychologist Ian Robertson joins Business Builders to unpack what confidence really is, how it shapes success, and why it can quietly turn against the very people it helps elevate.

Ian is Emeritus Professor at Trinity College, Dublin and author of two best-selling books:

How Confidence Works: the new science of self-belief. Penguin

The Winner Effect: the science of success and how to use it. Bloomsbury

Rather than treating confidence as optimism or self-belief, Ian explains it as a brain-based mechanism; one that drives action, motivation, mood, influence, and decision-making. Drawing on neuroscience, psychology, sport, leadership, and real-world examples, he shows how confidence compounds through small wins, why it’s essential for navigating uncertainty, and how it can distort judgment as success accumulates.

The conversation also explores the dark side of confidence: how overconfidence becomes addictive, why it mirrors the effects of power on the brain, and how leaders, founders, and public figures can lose self-awareness as dopamine, status, and success reinforce one another. Ian draws a sharp distinction between intrinsic goals, wanting to be good at what you do, and extrinsic goals like money, status, and beating competitors, explaining why one builds resilience while the other undermines judgment and mental health.

This episode is a deep, practical look at confidence as a tool, one that can build extraordinary momentum if used well, and cause serious damage if misunderstood.

🎧 In this episode, you’ll learn:
– What confidence actually is (and what it isn’t)
– Why confidence drives action despite uncertainty
– How the “winner effect” compounds success
– Why manifesting big goals can backfire
– How intrinsic vs extrinsic goals shape motivation
– Why overconfidence distorts judgment and risk perception
– How power and success affect the brain
– Why failure is a better teacher than success
– How confidence shapes leadership, parenting, and aging

⏱️ Timestamps

00:00 – What confidence really is
 01:30 – Confidence vs self-esteem and optimism
 03:50 – Confidence as a self-fulfilling prophecy
 05:10 – The winner effect and compounding success
 06:40 – Why confidence creates widening gaps over time
 07:05 – Why big fantasy goals often fail
 08:45 – Intrinsic vs extrinsic motivation
 10:00 – Confidence as the bridge across uncertainty
 11:20 – Confidence vs anxiety
 12:30 – Confidence as a natural antidepressant
 13:55 – Why confidence increases influence and persuasion
 15:00 – When confidence becomes dangerous
 16:40 – Overconfidence, luck, and distorted self-belief
 18:00 – Power, narcissism, and loss of self-awareness
 19:30 – Why extrinsic success becomes addictive
 20:00 – The limits of “manifesting”
 21:00 – Olympic failure and rebuilding confidence through process
 23:20 – Why Ian became fascinated by confidence
 24:30 – Why confidence matters so much in childhood
 26:00 – Anxiety, avoidance, and learning
 27:40 – Parenting, risk, and emotional robustness
 29:40 – Why failure builds better founders
 31:00 – Experience, learning, and explaining complex ideas
 32:45 – Self-awa