They say it takes a lifetime to write your first book and it is true. First books are born from ideas you carry around in your head for years, finessing and questioning over decades of lived experience. In many ways the seeds of my book, The Discomfort Zone, were sown all the way back in 2001. It was back then, sitting on that windowsill, that I became aware of the gulf that exists between truly successful people (in a professional sense, no more) and everyone else. What makes them stand out? How do they get the breaks in life? Was it down to luck, networking and the castors of confidence that good breeding encourages? Or was it something else? Did failure, struggle and obstacles touch their lives? Did rejection? Did constraint? And so for the past three years I set about finding out, interviewing those at the very top of their game: gold-medal-winning athletes, Silicon Valley entrepreneurs, those at the summit of the worlds of dance, public life and corporations.