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Brilliant Doubt

What If Doubt Is The Beginning?

Brilliant Doubt explores how uncertainty can become a source of clarity, confidence and meaningful leadership.

Rather than treating doubt as something to overcome, the book reframes it as a signal — pointing to the questions that matter most when leadership becomes complex, messy or uncertain.

Amazon #1 Best Seller in Business Management & Leadership

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A Few Words About Brilliant Doubt

When Brilliant Doubt Is Most Helpful

Professional Doubt can surface in many ways.
It may sit within ourselves, arise from the situation we’re facing, or be shaped by the wider system. Brilliant Doubt offers a framework for recognising these differences and responding with intention.

In yourself

In the situation you’re navigating

In the system around you

Bringing Brilliant Doubt Into The Room

I speak at leadership events and work with organisations to explore doubt as a powerful leadership resource.

Keynote Speeches

I speak at leadership events and conferences on Professional Doubt, decision-making and leadership in complex organisational systems.

Grounded in Brilliant Doubt, my keynotes invite leaders to rethink their relationship with uncertainty — not as something to eliminate, but as a professional signal that sharpens thinking, strengthens judgment and supports more confident leadership.

Talks are thoughtful, engaging and practical, offering leaders language for the questions they’re already carrying and insights they can take back into real organisational contexts.

Workshops

I design and facilitate workshops that translate the ideas of Brilliant Doubt into practical organisational contexts.

These sessions provide clear frameworks and tools that help leaders and teams work productively with doubt – understanding how uncertainty shows up in themselves, in the situations they face, and in the systems they work within.

Grounded in the concept of Active Doubt, the workshops equip participants with practical ways to access doubt as a resource – supporting clearer thinking, better conversations and confident, purposeful action in real organisational settings.

Praise for Brilliant Doubt

  • Tony Miller

    CMO Direct Line Group and Board Chair of the DMA (Data Marketing Association)

    Leaders who pretend they have all the answers rarely do. Brilliant Doubt hands us something far more powerful: the confidence to question, to challenge, to stay curious. Jenny brings doubt out of the shadows and into the spotlight, turning it into rocket fuel for bold decisions and brave leadership. This book crackles with energy and purpose. Read it. Use it. Then go shake up your organisation.

  • Henk Van Hulle, CEO

    Open Banking

    If in doubt, shout! Leaders thrive on doubt and embrace the challenges it projects. Brilliant Doubt is an all-comprehensive read which gives leaders the actionable tools to deal with uncertainty.

  • Roger Fielding

    BSc PGCE MEd MPhil MBA MCC ICF MCC Master Coach, Tutor, Cambridge University Coaching Programmes, Fellow of the Association for Coaching

    If you have ever doubted yourself, buy this book and celebrate!!

    After reading this book you will, without doubt, embrace doubt and value its power. In this brilliant book, Jenny’s counterintuitive perspective makes the case for brilliant doubt. Jenny reframes doubt as a leader’s greatest asset and introduces us to The Paradox of Doubt. The greater the success, the greater the doubts … certainty is not all it’s cracked up to be.

    Doubt is data we can do something with. Doubt offers hope.

  • Claire Pedrick

    Author Simplifying Coaching & The Human Behind the Coach

    In a world where we may know we aren’t the person in the room with all the answers, and may not dare say it, Jenny’s book offers ways to grab on to doubt with both hands and say that we have doubt and that it’s a good thing. A must read for leaders. And for coaches.

  • Veronica Flyckt

    VP Data Excellence Center, KPN Netherlands

    Brilliant Doubt has helped me see doubt as a valuable source of data that I now actively use to drive growth, both professionally and personally. It reminded me that doubt can be a healthy and powerful source of insight — one that fuels curiosity, learning, and reflection. This book offered fresh perspectives and practical tools for using doubt more intentionally and effectively.

  • Jane McNeill, COO

    IAB UK

    Brilliant Doubt flips the script on traditional leadership and is a refreshing reminder that real strength in leadership doesn’t come from unshakable certainty, but from the courage to embrace doubt.

    In celebrating doubt as a superpower, it highlights the importance of questioning assumptions in a fast-changing world and offers genuine food for thought – perhaps the most resilient leaders are not those who claim to have all the answers, but those who remain open to new ones?

  • Fiona Alderman, Director of Legal and Governance

    London Borough of Haringey

    Brilliant Doubt is a powerful and practical exploration of doubt as a leadership strength. By naming and normalising doubt, this book gives leaders a toolkit for navigating uncertainty with clarity and confidence.

  • Julie Davidson, CMO and Advisor

    Formerly Chief Marketing and Communications Officer at London Business School

    Most leadership thinking avoids self-doubt altogether. Brilliant Doubt goes further. Jenny shines a light on the importance of giving voice not only to self-doubt but to situational and systemic doubt, the external forces that should equally demand our attention. This wider lens is exactly what leaders need to navigate complex organisational realities with sharper insight and wiser confidence.

  • Carol Stickler

    Global Consulting Principal, Ogilvy North America.

    Jenny’s reframing of doubt is at once immensely thought provoking and practical. With AI revolutionising our world of work, professional doubt is growing exponentially. A guide on ‘how to hold space for doubt’ has never been more timely and relevant for today’s leaders.

  • David Benigson, CEO and Founder

    Signal AI

    In business, as in AI, intelligence starts with asking better questions. Brilliant Doubt shows leaders how to transform uncertainty into sharper decisions and bold action.

  • Martha Velando

    Global Marketing & Retail Strategy Experience with P&G, L’Oréal, Coty, DeBeers, Puig

    Jenny, I’ve followed your journey with Brilliant Doubt since our early conversations about the courage to question — something leaders rarely discuss openly. Your work reframes uncertainty as a strategic asset, transforming doubt into the clarity that drives better decisions and more authentic leadership. It’s a timely and important contribution.

  • Rachael Sansom, CEO

    UK & Europe, Havas Red

    Jenny was the first coach I ever brought into my leadership world, and she remains a trusted partner many years on. She brings energy, insight and real curiosity to every conversation. Brilliant Doubt distils what I have seen repeatedly in practice: when leaders learn to work with doubt, they unlock clearer thinking, stronger relationships and more confident action.

  • Jo Hicks, Chief People Officer

    NHS

    At a time when certainty is overvalued, Brilliant Doubt offers a bold and refreshing perspective. Jenny Williams reveals doubt not as a weakness, but as a hidden source of insight and strength. Through her exploration of self-doubt, situational doubt, and systemic doubt, she brings new understanding to how doubt shows up – and how it can serve us. With clarity, compassion, and practical wisdom, she shows how leaders can transform uncertainty into wiser choices, stronger relationships, and more authentic leadership. This is an essential companion for anyone who has ever quietly wondered, ‘Am I enough?’

  • Elisa Harca

    Co-Founder and CEO, Red Ant Asia

    When I first worked with Jenny over 15 years ago, I was at a crossroads -uncertain, second-guessing, and tempted to play safe. Her ability to help me face my doubts head-on gave me the clarity and courage to make one of the most important decisions of my career: the leap from being an employee to co-founding my own company in China. That decision transformed my trajectory, and it was only possible because Jenny helped me see that doubt could be a signal, not a stop sign. In Brilliant Doubt, she distils the essence of that coaching into a powerful framework every leader can use. This book is both deeply practical and deeply human – a guide to turning doubt into the engine of wiser leadership.