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Big Trust

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What to expect

Brought to you by Penguin.

Harness the power of self-belief and learn to back yourself, every time

Self-doubt. It’s the silent force that undermines potential, eats away at confidence and traps even the most capable in overthinking. You can’t outperform it, but you can rewire it.

Drawing on leading research, over a decade of work with Fortune 500 companies, and experience educating millions of professionals worldwide, Dr Shadé Zahrai reveals a proven system for breaking the cycle of self-doubt and building deep, unshakable self-trust. In Big Trust she shares her proven framework – the Four A’s: Acceptance, Agency, Autonomy and Adaptability – and shows you how to take control of your inner world so you can thrive in the outer one.

With insights from her self-diagnostic quiz and actionable exercises throughout, you’ll learn to:

  • Reframe the beliefs that hold you back
  • Break free from people-pleasing and perfectionism
  • Quiet comparison and imposter thoughts
  • Stretch your comfort zone and reclaim your power
  • Channel emotion into clarity and conviction


Whether you’re second-guessing a big decision, overthinking in high-stakes moments or feeling stuck despite knowing you’re capable of more, Big Trust offers practical steps that lead to powerful, lasting results.

Everything you aspire to and the strength to realise it, begins with Big Trust.

'This book will change the way you lead yourself and others' Sahil Bloom

‘The playbook for learning how to make the most of your moment and overcome the doubt trying to take you down' Lewis Howes

© Dr Shadé Zahrai and Faysal Sekkouah 2026 (P) Penguin Audio 2026

Critics Review

Big Trust is a timely and powerful guide for anyone who has ever second-guessed themselves. Dr Shadé Zahrai distills rigorous research into practical tools that help you replace doubt with clarity and courage. This book will change the way you lead yourself and others.
Sahil Bloom, New York Times bestselling author of The 5 Types of Wealth: A Transformative Guide to Design Your Dream Life
We all know the fight with self-doubt. In Big Trust, Shadé gives you the mindset and tools to be the one still standing. Science-backed and easy to put into practice, this book hands you a game-plan that actually works. If you’re ready to stop second-guessing yourself and step into your potential, this book will show you how.
Jefferson Fisher, trial lawyer and New York Times bestselling author of The Next Conversation: Argue Less, Talk More
Shadé Zahrai is already well known for her groundbreaking work on mindset and leadership, and Big Trust lives up to the anticipation... Big Trust is the compassionate, evidence-based guide we’ve been waiting for to help transform self-doubt into enduring self-trust. It’s the rare kind of book that is both inspiring and truly actionable.
Dr Sue Varma, psychiatrist, Distinguished Fellow of the American Psychiatric Association, and author of Practical Optimism
Big Trust is a thoughtful and compassionate guide to rebuilding confidence and overcoming self-doubt with clarity and courage. It provides the tools to transform uncertainty into lasting self-belief.
Nir Eyal, bestselling author of Indistractable and Beyond Belief

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