Success tends to bring its own problems, and writing a successful book brings extra huge trouble - the biggest of which is that all the people who managed to get a piece of the action, then want you to repeat it.
Someone once described me as the world's most persuasive man. As I gave the subject more thought I realized that persuasion and influence can be just the opposite of power. If you are loaded with power, why bother to persuade?
As I trundle round the world doing my business guru-ing, I am often asked to give a Keynote address on some business theme or another. The client usually names a subject that is close to their heart and I try to give them a nugget-filled presentation that is relevant.