In his latest user-friendly road map for human emotion, the author of the bestselling Learned Optimism proposes ratcheting the field of psychology to a new level. "Relieving the states that make life miserable... has made building the states that make life worth living less of a priority. The time has finally arrived for a science that seeks to understand positive emotion, build strength and virtue, and provide guideposts for finding what Aristotle called the `good life,' " writes Seligman.