A collection of the best ideas from Positive Psychology, the study of personal well-being. Concise and easy to read, this book provides 24 specific actions, called keys, that a reader can do to enhance life satisfaction. The first twelve are oriented to lift one's mood in the short term, the second 12 to build greater lifelong happiness. Scientific validation of each one indicates that they are effective strategies for anyone seeking to enhance overall life satisfaction. An extensive bibliography of Positive Psychology literature is included.