This book is awesome! I've read a zillion happiness books (and sort of heart them all), but what sets this one apart is that it's both a review of the literature (in a fun, anecdotal way) and also a little guide book: Seven happiness killers and seven happiness exercises.
SUPPOSEDLY there's a Website that has the exercises and little assessments and such, along with a free Coursera course, but I finished this like 5 days after he launched his Web site, and it was performing crash/craptastically.
Besides the crashtastic Web site (www.happysmarts.com), which I'm sure will improve, this book hit the spot for this happiness-obsessed guy. Practical, little habits to help boost happiness and reduce unhappiness.
Good work, Raj!