What's your dream job? Are you qualified for it? If not, would that stop you from taking it if it were offered to you?
WARNING: This is entirely too long to be a Writer's Block. Read at your own risk.
I'm not sure I'll ever really know. I never took the time to daydream about what I wanted to do - not much, at least - and now I'm still uncertain. I don't know why. I mean, I've entertained ideas: I've wanted to be a psychologist, a nurse, a teacher, a writer.
Writing's the thing that I've given my attention to longest in my life. English has been my greatest subject in school as long as I can remember, and this next semester I'll be tutoring for it at my college (the "Writing Center"). If I could do anything, I'd want to be in a field associated with it, and as of now I'm considering either teaching or, even more greatly, something with editing, something like a publisher's office or a magazine company, or god, I don't know.
I realize that's not really being a writer, but it's something that I'm (currently) passionate about. And I'll probably change my mind fifty-two zillion times before I actually find my career, but that's okay. As long as I'm happy; as long as I enjoy what I do to the greatest extent possible. That'll be my greatest accomplishment.
I know this is a very wishy-washy answer. And to answer further, as it stands, I'm not really qualified for anything. After college I'll have my degree in English, and I'll be able to immerse myself in anything associated with the subject - anything that will accept me, at least. Even then I may not be completely qualified, but experience will give me what I need.
If I were offered a job that I truly wanted, there's no way I would turn it down. How could you? At that point, you're obviously wanted within the company to some degree, and therefore the only one holding you back would be yourself.
And you know what? If you screw it up - fucking awesome. Take the chance to screw up everything you can in life. It's both entirely bad-ass and a great chance to learn what you can better in yourself. Someday you'll cherish that.
DISCLAIMER: I'm not planning to screw up anything in your company. Please hire me.