Below is a link to an article with 52 suggestions on how to live a happier and more productive life.
http://zenhabits.net/handbook-for-life-52-tips-for-happiness-and-productivity/
If you have five minutes to read this, it is a good checklist of good, common sense ideas. You are probably doing most of these things, perhaps all of them to some degree, but it is good to see all these gems in one glance.
Happy and productive reading!