Things that make you go, hmm?

It's in my nature to obsess, and in keeping with what comes naturally, I have been thinking about the ACO pretty much 24/7 since the day I signed up.  I waver between sheer panic and utter determination almost constantly.  And it basically comes down to two things:  "What if I'm not good enough?"  Or "What if I'm better than I thought?"  I'm not sure which scares me more.