I was like that when I was 20, except for the art stuff. I write code, that's what I'm good at, everything else is uninteresting, therefore I fail at it horribly.

Nevertheless, ten years later, I have a good job, which I absolutely love, and even when I leave home, I can barely wait the next morning so I can come back in and work. (Ok, it's not THAT bad, but you get the idea!)

And whenever I ask myself "what the hell am I going to do when I'm 40?", I know the answer: I'll still be working here, still be loving it. Perhaps I'll have a mid-length tie by then, perhaps not - I'm not worried.

Life, and jobs aswell, has its ups and downs. Starting a career is usually a bit of a downhill ride at first, but don't worry, once you find that one thing you were meant to do, these questions about the future will vanish.