Jack Bogle's Rules For a Good Life
Rule No. 1: Get out of bed in the morning. If you don't do that, not very much is going to happen. Once you get out of bed, try to have a good day. Try to be a better parent. Try to be a better husband. Try to be a better colleague. Try to help those around you. Try to teach people. Try to learn. Try to do something completely off the wall. Be conscious of the world around you, and try to make it a tiny bit better today. If you do that, when you go to bed you'll get a good night's sleep.
Rule No. 2: Repeat Rule No. 1 the next day.
Definitely the key to a good and fulfilling life. If you want to read the whole article, you can find it here http://www.philly.com/philly/news/homepage/31242114.html?page=1&c=y