A fear of relapse

[Goon]

Hey all, I just recently found out I was an atheist after being brought up in a christian family. I mean, looking back I guess being a christian never really clicked with my totally analytical brain but somehow I still managed to hold onto it, albeit quite loosely as time went on. So 21 years a "christian" I finally come to terms with myself and, probably a little too quickly, come out to my friends and family. Woot!
Problem starts a little bit later when I find myself trying to explain why I am an atheist to my family. I have solid arguments, don't get me wrong, I mean I spent years contemplating all this before I decided. But there must still be a part of me that's having trouble letting go because as I form my logic I hear a little voice in my head saying
"Oh, that's not right! How could you think like that?"
And I tell the voice, "Well here's the logic. It only makes sense that it's like this."
And then I'm going back and forth with myself battling my old indoctrinated christian sentiments with my emotionless logic and in the end I have to remind myself of how I felt as a christian when it never felt quite right so the voice in my head quiets down. But it always comes back and I do it all over again, it's extremely frustrating.
I'm kind of fearful that I'll have a relapse and become the zombie I once was again, never daring to reach out and explore.
Has anyone else experienced this? Any wisdom or tips to help a newborn such as myself?

I get tired of the old habits creeping up. I am slowly letting go of the response to problems being something the glory of gawd will digest. It's sort of sad being without the hope of an eternal brace, but keeping it going and not being completely developed by indoctrination is traumatic to the mental health of a person. To keep running to nothing and thinking getting nothing is a present is sort of sad. It is the life of many.. lies built up that can seem to not be fiction to the majority.