Am I really that creative person?

I'm sitting in my Intro. to Digital Imaging and the folks around are super creative. I know I tend to immediately get insecure and jealous because I can't do decent/good spontaneous art things. Now if I would practice and not get pissed when I mess up because telling myself I'm a super novice and with practice I'd get better, it still doesn't work. I still get super annoyed at myself for not being perfect NOW!!

I think so detailed, it's almost to detrimental to being a creative person. I'm never satisfied with basic answers. 

We'll over this insecure hump an on to the next!