Why cant I get better at drawing?

[?r?anna]

I have always loved drawing ever since I was born. Just a few years ago I discovered digital painting and I have always wanted to learn how so I have been trying ever since. Everyday I draw for about an hour or two, but I can't sketch anything that looks human to save my life. All my drawings end up looking like some kind of horrible disorder. I'm losing my motivation to keep going. It's the only thing I want to do, though. And after I draw each day, I am almost in tears because I can't even do something as simple as moving a pencil, plus this is my passion and it hurts me that I can't get better. How long does it take? Or, how long did it take you to learn how or get to where you are now? I don't know, I imagine all good artists were good ever since they picked up a pencil, but I don't know maybe that's why I feel so bad. Anyway, Is this normal or am I just destined to not learn how to draw? I'm willing to do anything it takes, but I guess I am just looking for some encouragement or hope or whatever.