10. Sally Helgesen, Marshall Goldsmith

Leadership expert Sally Helgesen and bestselling leadership coach Marshall Goldsmith have trained thousands of high achievers — men and women — to reach even greater heights. Again and again, they see that women face specific and different roadblocks from men as they advance in the workplace. In fact, the very habits that helped women early in their careers can hinder them as they move up. Simply put, what got you here won’t get you there . . . and you might not even realize your blind spots until it’s too late.