I'm guessing that, by posting here, you are probably interested in a programming/tech career. While it's true that you can get hired without any formal education, the unfortunate truth of the matter is that you probably won't, especially in this economic environment.

Get your GED and get into higher education. If a uni. won't take you immediately, take some classes at a local community college and look to transfer up.

College is much more enjoyable than high school -- you might actually learn something ;)

I'm 22, in a university, and already regretting not focusing more on my studies. But I know if I don't get them done now, it'll never happen.