From "Wins, Losses, and Lessons" by Lou Holtz:
• First, you have to have something to do. Stories of healthy individuals who die within a few years of retirement are too numerous to list. It’s also true that prisoners serving life sentences sleep for twelve to fourteen hours a day because they have nothing in their lives that compels them to get out of bed.
• The second thing you have to have is someone to love. We are put on earth to love other people. Those who don’t have anyone exist without happiness.
• Third, you have to have something to believe in. I’ve always said that not believing in a god is not an option for humans. You might not believe in the Heavenly Father, as I do, but everyone has a god.
• Finally, you have to have something to look forward to.