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.