Dan is the author of five provocative books – including the long-running New York Times bestsellers, A Whole New Mind and Drive. His latest book, To Sell is Human, is a #1 New York Times business bestseller, a #1 Wall Street Journal business bestseller, and a #1 Washington Post nonfiction bestseller. In this interview, Dan talks about servant selling, a concept he introduces in To Sell is Human that is derived from servant leadership.