Rebellion
Its a dirty word in Christian circles.
What does it mean to you?

A friend asked me recently how my walk with God was going, and I had to answer, "Well, I actually don't believe in God anymore, so it really isn't." We then got to talking about other aspects of life in general, and she seemed to disapprove mildly, finishing the conversation with, "Well, I'll keep praying for you. We all go through a period of rebellion sometimes, but you'll come back to the Lord."

And I didn't add anything at the time, but I will now.
I didn't "turn away" because I wanted to persue a career that God disapproves of.
I didn't "ignore the lord's commandments" because I wanted to sleep with a non-Christian man
I didn't "serve a false idol (ie my job, money, etc...)" because God wasn't giving me what I wanted.

Rebelling against one's leader means that that leader is, in fact, there. You can't willfully turn away from and disregard something that doesn't exist in the first place.
If I still believed in God, if I still believed that Jesus died for my sins, but I wanted to be a geologist no matter what, if I wanted to live at Forrestania no matter what, if I wanted to like the people that I like no matter what, and figured "I'll fix this with the big man in the sky later" that would be rebellion.

What I'm doing now, living for myself, my career, the people that I love...
That's not rebellion. That's only rebellion if there is, in fact, something else I should be living for.

What I'm doing now is not in any way rebellion. I have no attitude of defience, I'm not stubborn, I'm not headstrong, nor am I overly selfish. I simply don't believe in wasting my life for something I'm about 90% sure does not, has not, and never will exist.