Why is painting so hard!

Why, why, why? Why is painting so hard? A few times every year, I decide to paint a picture. I'm always confident it will turn out awesome, but it turns out crappy every time! It's just so diffcult! How do they do it? It looks so easy, but I just can't get a grip on it... It's so annoying!! Argh! I think my new year's resolution should be learning how to paint. At least ONE half decent picture during my lifetime. Going back to gnaw on my brushes in frustration now...