The book should have been of great interest, especially to psychotherapists. The 44 authors include leading researchers, among them Daniel Kahneman, winner of a Nobel Prize, and Martin E.P. Seligman, a president of the American Psychological Association and the most productive of the positive psychologists. Yet this book, like many conference-based books, is a disappointment destined to slumber unread on library shelves. Why postconference books so often are jinxed is a question for the sociologists of academia. The symptoms common to such efforts and apparent here include too sparing an application of the editors’ blue pencil, leaving the reader to slog through sentences, paragraphs, and even entire chapters that are banal, tautological, redundant, or indecipherable.