Secret, 4th Edition, Revised and Expanded

Ken Blanchard is cofounder of Blanchard, a leading international training and consulting firm. Author of over sixty-five books with combined sales exceeding 25 million copies, he was inducted into Amazon's Hall of Fame in 2005 as one of the top twenty-five bestselling authors of all time. His leadership expertise has influenced millions worldwide.

Mark Miller is cofounder of Lead Every Day and former vice president of high performance leadership at Chick-fil-A. Author of twelve books, including two coauthored with Ken Blanchard, his works have sold millions of copies. His real-world corporate leadership experience brings practical insights to leadership development.