Spencer Johnson, M.D., was the author or coauthor of many New York Times bestsellers, including Who Moved My Cheese?, The Present, Peaks and Valleys, and (with Ken Blanchard) The One Minute Manager, the world's most popular management method. His books have been translated into 44 languages and have helped tens of millions of people around the world. His education included a B.A. in psychology from the University of Southern California, an M.D. from the Royal College of Surgeons, and medical clerkships at Harvard Medical School and the Mayo Clinic. He died in 2017. - (Penguin Putnam)