Atheists: Did you ever had doubts about your non-belief? How did you bounce back?

The common "I used to be an atheist but now am a believer" is different than coming to atheism or doubt from a religious upbringing. The reason for this is because it sounds to me that you just didn't like to go to church(no child does) but you didn't really think a lot about your faith. The fact is that we are all born without religion and we are eventually indoctrinated, yours simply came at a later time.