Ken Blanchard is the coauthor of The One Minute Manager® and fifty other books, including the New York Times business bestsellers Gung Ho! and Raving Fans. His books have combined sales of more than eighteen million copies in more than twenty-seven languages. He is the chief spiritual officer of The Ken Blanchard Companies, a full-service global management training and development company that he and his wife, Dr. Marjorie Blanchard, founded in 1979.
Spencer Johnson, M.D., is the author or co-author of numerous New York Times bestselling books including the #1 bestseller Who Moved My Cheese? Dr. Johnson received his M.D. from the Royal College of Surgeons, and completed medical clerkships at the Mayo Clinic and Harvard Medical School. He lives in New England.