The Dalai Lama states that enlightenment requires time, will, and perseverance. Throughout the day it is important to check motivation and to be mindful. The Dalai Lama outlines the basic theories and practices of Tibetan Buddhism. The most practical section of the book is on the cultivation of an altruistic outlook and way of life. Having "a good heart" means overcoming selfishness and the inner enemies of anger and hatred. "Altruism is not merely a religious ideal," notes the Dalai Lama, "it is an indispensable requirement for humanity at large." The fate of the planet may depend upon it.