This is something that just happened very recently (like in the last 1-2 months), so I haven't come to understand everything about my views yet.
My entire life I had no exposure to religion. Not through family, friends, school or other. Up until I was 20, I was a complete athiest.
Then I met my (now ex) girlfriend. She was catholic. I was always hard on her, but I asked many questions and we talked about religion/spirituality in general for many hours over the 3 years we were together.
There were times when I wished I could have believed in God, and sent out prayers just asking for a sign, or anything that might convince me. I never got anything, but I did start to become much more tolerant of other views and viewpoints.
I think the biggest change came with a book I read for one of my university clases. It was called "social psychology from a sociological perspective" and the book was called "Symbolic Interactionism".
I'm generalizing here, but it seemed like it talked about how things were all connected, and different views of reality, how there may not be any one "true" reality, but rather we all have our own perspective of the truth, etc... (which doesn't have to do with my story really)
Anyway, at one point in the book, the author talks about free will versus fate (as in everything past, present and future is already determined through an infinite cause effect relationship and cannot be changed - as opposed to talking about fate where there are certain events that are just supposed to happen).
One thing that I had to question was the idea of free will and what it REALLY meant. The idea of free will (as best as I can think to myself) is beyond something that science can "prove". It's not testable. You can only see it's effects. I came to decide that I very much believed that I did indeed believe in free will.
I think this was the single biggest turning point because I now believed with all my mind, something that simply could not be proven. I had to take it on blind faith.
In the past several months I've learned a lot and come to realize a lot of things about life that just never saw before. I started to feel an incredible attachment and oneness with absolutely everything in this universe. All life, all matter, everything is connected, and I feel it. I began to feel so peaceful and happy with myself.
Then one day while I was at work, walking down the hallways. I felt something in my heart and mind. I just stopped, and I felt warm all over and couldn't stop smiling. What I felt, I can only describe as the purest sense of love I've ever felt, and that doesn't even begin to do the feeling justice.
I felt "God". Whoever, or whatever that was, that force that I could tell connected everything, touched me. I was in absolute bliss for the entire day. This was on tuesday June 5, 2006.
I believe God was revealed to me only when I became ready. I can't explain my feelings in anyway that could convince anyone else. I think it's something that will be different for everyone.
I'm not trying to convince anyone to believe anything I say, but I'm saying it so that others can maybe understand that people can and do change.