Oh so many books
I liked this book. It really presents the "act as if" mentality and has numerous ideas and behavioral suggestions to increase your feelings of well being. I did think that much of the focus was on the work place. If you are a stay-at-home worker you can still use the info but not everything actually pertains to your situation. However, the studies and insights are still really interesting to hear about.
A positive listen about choosing to be happy.