Ken Blanchard is the founder and Chairman of The Ken Blanchard Companies. His One Minute Manager series has sold over thirteen million copies and been translated into more than 25 languages. He has also written or co-authored numerous other books, including Gung Ho!, Big Bucks! and Raving Fans! Spencer Johnson is an internationally bestselling author whose books help millions of people discover simple truths they can use to have healthier lives with more success and less stress. His many bestsellers include The One Minute Manager (with Ken Blanchard), The One Minute Sales Person, Yes or No and Who Moved My Cheese?