What keeps me going (kept me from killing myself plenty of times) is philosophy. A knowledge that what I believe in is right, the ability to prove what I know is right (no faith), and that the world is something to live in, not something that is positive or negitive any more than I make my life to be.
My email quote:
Every man builds his world in his own image. He has the power to choose, but no power to escape the necessity of choice. - Ayn Rand
If you want to make your life wonderful, make it wonderful. If you think you don't control your life, you won't. If you believe there are powers greater than you, you'll be powerless.