Hm... I had to ponder what to post here. Michael brings up a very good point, that Christianity is about not focusing on the self. However, it is also true that God does not force us. He found me partially because I was willing to be found, and that is what this post is intended to address.
To keep on the topic, I won't go into the process by which I came to faith, except to say it is similar to what termyt and cbwing0 described. Having found a logical conclusion, I find that it continues to grow stronger as time passes. My faith is based upon a multitude of arguments, so much that I am willing to give it the benefit of the doubt on the issues that I do not understand.
There are two other things that, while not evidence for faith alone, do provide collaborative evidence. One is that, despite all the pain I see Christians causing, I see so much more good. Another is that I have never seen a system of belief that so frequently causes individuals to undergo positive transformations. I have yet to see a criminal become a kind person after converting to secular humanism.