I just finished reading an excellent book called The Happiness Hypothesis by Jonathan Haidt. The book explores 10 “great ideas” from Buddhism to Taoism to Christianity through the filter of modern beliefs. It is extremely well written and fluid. If you have any interest in the study of happiness and fulfillment from ancient times through the present, please read this book.
Along those same lines, I want to share this article from New York Magazine titled “50 Simple Steps to Happiness.” It has a great list of everyday things you can do to brighten your (and someone else’s) day. Many of the things are unique to NYC but I think you will enjoy the article anyway.