Stumbling on Happiness seemed to me to be a thorough survey of historical and contemporary research on what makes us happy. It is not a self-help book (thank God), but rather a bit of a scientific journey, and an exploration of what, scientifically speaking, determines happiness, and how more than anything perception and the way it’s influenced impacts our feelings.
It doesn’t really offer any particular advice or solution, though it does a nice job of pissing on common wisdom, which I appreciate. I think it’s worth a read if you’re interested in the topic. 7/10.