Just a few years ago in my middle-adulthood, I turned to "God and Jesus" in a desperate attempt to keep sanity during really hard times (my wife and kids and I were in the brink of homelessness, with no job and almost no cash, 9000 miles away from home). I really believed it was a mental coping mechanism, but I didn't care at that point.
Our situation resolved, and I ended up returning back to my agnosticism. But existential panic attacks sent me searching more fervently for an answer. I reached out to a non-denominational (i.e. Protestant) pastor, telling him that I wanted to believe in Christianity, but I couldn't violate my integrity, knowing that it's incompatible with science and history.
He gave me a book called The Reason for God[1] which demonstrated that Christianity doesn't conflict with science, and that the Resurrection of Jesus is historically true and accurate as presented in the Gospels. When I finished reading it, I chose to become a Christian.
Eventually, as I kept researching different denominations, I settled on Catholicism as the most likely to be correct. For other Christians curious how I could come to that conclusion, I would recommend The Catholic Controversy[2] by St. Francis de Sales.
[1]: http://www.amazon.com/The-Reason-God-Belief-Skepticism/dp/15...
[2]: http://www.amazon.com/The-Catholic-Controversy-Defense-Faith...