The difference between people who believe they have books inside of them and those who actually write books is sheer cussed persistence - the ability to make yourself work at your craft every day - the belief even in the face of obstacles that you've got something worth saying.
My dad doesn't like religion much but I grew up very close to the Baptist tradition. God isn't this distant thing. God is right here with you all the time. He's your buddy and you can talk about everything.