Positive thinking can help us but this is not the pill of happiness as we wish we sell !! Almost all the books talk about personal develop-and cheaper and without much marketing (eg psychologist, Susan Jeffers, Tremble but dare or dare break the ice). If the positive self-persuasion can help, it does not give meaning to life or understanding of the world and ourselves. It can even be dangerous if we stifle our negative emotions that inform us on our needs. So keep your critical mind and not blindly believe! Warning: too much marketing around this book to enrich the publisher and the author through our need for happiness !!!