The Happiest Man on Earth by Eddie Jaku
If you want a book that puts life into perspective, here is one to throw on top of the pile. Recommended by a buddy and it did not disappoint. This guy tells his story of surviving through two notorious death camps, losing nearly all of his family to the Nazis, and coming out the other end to be the "happiest man on Earth." He has a wonderful message at the end and about being happy.