This book is a must-read for anyone looking to achieve success and long-term fulfillment. Written by George Leonard, Mastery: The Keys to Long-Term Success and Fulfillment provides valuable insights into personal growth and development. The book is a nonfiction activity book that covers topics such as self-help and psychology, with a focus on personal growth and success. The Collector's Edition of the book is a softcover book published by Penguin Publishing Group in 1992. It is written in English and is intended for adults. The book is ex-library and has been well-maintained. It is a great addition to any book collection and a valuable resource for those looking to improve their lives.