At the risk of burying you with too much information today (you know you can pick and choose, right?), here's another blog that I ran across that talks about people with great confidence and small talent and visa versa. I think it's quite helpful if you struggle with this...

If you haven't read the 2 posts below however, do that first!

http://artist-confessions.tumblr.com/post/23749320501/competence-versus-confidence