The "Book of Joy: Lasting Happiness in a Changing World" by Desmond Tutu, Douglas Carlton Abrams, and the Dalai Lama is a trade paperback book published in 2016 by Diversified Publishing. This book, with 544 pages, explores the topic of spirituality, personal growth, and happiness in the context of changing world. It features large type for easy reading and offers insights on self-help, biography, body, mind, and spirit, as well as religion. The authors share their wisdom and experiences to inspire readers on the path to inner peace and fulfillment.