The Eight Paradoxes of Great Leadership

Last year, I did a book that I really was proud of. It was called eight paradoxes of great leadership. People today are just in a different place and we do need to read them before we leave them. You've written over 30 books, is that correct? Yes, 30. This is number 38, believe it or not. So almost 40 books are excluding the ones we've talked about. If you would recommend one book of all of yours, one other book to our audience, what would be most helpful to help them grow in their leadership?