Roy F Baumeister is one of the world's most prolific and influential psychologists. He received his PhD from Princeton in 1978 and currently is Francis Eppes Eminent Scholar and head of the psychology program at Florida State University. He has over 450 scientific publications, and this will be his 28th book. John Tierney writes the Findings science column for the New York Times. His science writing has won awards from the American Association for the Advancement of Science and the American Institute of Physics. He is the author of The Best-Case Scenario Handbook and the co-author, with Christopher Buckley, of the comic novel God Is My Broker. He is a frequent guest on US radio and television.