What if the real problem isn’t that you doubt yourself, but that no one ever taught you how to use doubt well? Doubt is often treated as a weakness in leadership. Something to overcome, hide, or silence. Yet whether it shows up as self-doubt or imposter syndrome, doubt carries insight that leaders can’t afford to ignore. In Brilliant Doubt , executive coach Jenny Williams reframes doubt as a critical leadership signal . When understood and used well, it leads to better decisions, stronger collaboration and more effective leadership in complex organizations, particularly in a world where uncertainty and change are constant. The book introduces three forms of Professional Doubt - self, situational and systemic - shaped by the pressures and realities of modern organizational life. When leaders learn to read doubt rather than push past it, they gain greater clarity, confidence and impact. At the heart of the book is Active Doubt , a practical approach that helps leaders turn hesitation into insight, uncertainty into movement, and questions into meaningful action. Brilliant Doubt is for leaders who want to navigate uncertainty with courage and intelligence and who are ready to turn doubt into a strategic advantage. All change starts with a doubt. ‘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... With clarity, compassion, and practical wisdom, she shows how leaders can transform uncertainty into wiser choices, stronger relationships, and more authentic leadership.’ - Jo Hicks, Chief People Officer, NHS ‘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.’ - David Benigson, CEO and Founder, Signal AI ‘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... This book crackles with energy and purpose.’ - Tony Miller, CMO, Direct Line Group and Board Chair of the Data Marketing Association (DMA) What if the real problem isn’t that you doubt yourself - it’s that no one ever taught you how to use doubt well? Whether it surfaces as self-doubt or imposter syndrome, doubt carries insight leaders can’t ignore. In Brilliant Doubt , Jenny Williams reframes doubt as a critical leadership signal. Its three forms - self, situational and systemic - are shaped by the pressures and complexity of organizational life. When leaders learn to read doubt, not silence it, they make sharper decisions, collaborate more effectively and navigate uncertainty with greater clarity. At the centre is Active Doubt - a practical approach that turns hesitation into insight and uncertainty into movement. Brilliant Doubt helps you lead with courage and impact by turning doubt into a strategic advantage. All change starts with a doubt. ‘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.’ ― David Benigson, CEO & Founder, Signal AI *‘At a time when certainty is overvalued, Brilliant Doubt offers a bold and refreshing perspective… This is an essential companion for anyone who has ever quietly wondered, ‘Am I enough?’ *― Jo Hicks, Chief People Officer, NHS ‘This book crackles with energy and purpose. Read it. Use it. Then go shake up your organisation.’ ― Tony Miller, CMO Direct Line Group Jenny Williams (MCC) is a top Executive and Systemic Team Coach who works with leaders to leverage the power in their doubts. For the last 15 years, she has spent thousands of hours working with exceptional senior clients who also doubt, to deliver exceptional results. While leaders often see their doubt as a problem, Jenny knows how to use it as a catalyst for clarity and a powerful aid to better decision-making. Her unique approach is based on research and her own experience working through her own doubts, first as a global Creative Director for Nokia, and then with her coaching abilities. This work has established her in the top 4% of coaches globally with an International Coaching Federation certification as Master Coach. She has lectured at Cambridge University on leadership, entrepreneurship and creativity.