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Brilliant Doubt
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17 February 2026

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.
Jenny Williams, MCC, is a leading Executive and Systemic Team Coach who has lectured at Cambridge University on leadership and entrepreneurship. She has spent thousands of hours working with exceptional leaders, helping them harness the power of doubt as a catalyst for clarity, creativity and confidence.
Introduction
Section 1: Don’t Doubt Doubt
Chapter 1: Why the business world needs doubt more than ever before
- The crisis of certainty
- Culture: the breeding ground of doubt
- What if we can’t succeed without doubt
- Power in doubt for the leader, the team and the organisation
Chapter 2: What is doubt? * Inner doubt and the imposter * External doubt * Professional Doubt
Section 2: Leadership Doubt
Chapter 3: Doubt is a process
Chapter 4: Processing the doubt demons
Chapter 5: The Professional Doubt process:
- The question from doubt
- Do the ‘do’ in doubt
- Challenge
- Collaboration
- Creativity
- Changing
- Calculation
- Decide and drive
Section 3: Team Doubt
Chapter 6: Surfacing the doubts
Chapter 7: Sharing the doubts
Chapter 8: Solutionising doubts
Section 4: The Future of Doubt
Chapter 9: Using doubt to create future leaders
- Recruiting doubtful leaders
- Using doubt to unlock future dreams
Chapter 10: Why the future needs doubt?
- Doubt and AI
Conclusion
End Pages
About Jenny Williams
Acknowledgements
References