And to the thread starter:

Don't get depressed in the fact you don't believe in god. If you feel like something is missing in your life and you think god may help fill that void, start doing research. Read what different religions say on the matter. Decide if any of them sound right, moral, and just to you. If you find one you think you may like, go to a mass or two.

The only way to find out if you believe, is to expose yourself to the idea of god.

Really all you have to do is sit down and ask yourself if you think this world had to have been created by a greater being. There is no point in stressing yourself out over the topic though. Make the best decision you can make when you gather enough info from both sides.