The Happiness Hypothesis: This book is well-written, and is an excellent overview of many of our themes such as the predominantly unconscious nature of mind and decision making, the prevalence of rationalization, major findings of happiness research and the evolutionary psychology/game theory interpretation of social cooperation. A particular contribution of this book is the use of ancient truths from different cultures as a point of departure. This is all combined in a package with simple (but not necessarily easy) ways to optimize your happiness. Furthermore, we like the voice, which is humanist and spiritually informed.