It don't matter if you believe in God, Buddha, Allah, your neighbour, a holy cow or yourself. As long as you have faith. In yourself, your powers, the world and some kind of greater good.
I am not a religous person, but I think it is important to believe in something. I can't say what I believe in, but I strongly think that there has to be something more powerful than me. Anything else would be egoistic and childish.
I could go religious here, and let you all know my view in the subject, but as that normally brings out a whole lot of voices I will not go there yet. Eventually I will let you in on my views though.