How to choose a career path?

I too didn't know what I wanted to do - guess because I didn't know what I liked or liked enough and through I could make a career of. So, my suggestion is to try different things. Some things I tried because my school adviser suggested classes that I didn't think I'd be interested in but ended up loving. Other thing I figured out is that I felt a lot of pressure because I thought once I pick what I'm going to do, that's it...for the rest of my life. Didn't turn out that way. I've changed jobs and fields because something about it interested me. Technology also increases the speed of change/invention so what you might end up doing might not be a job yet. P.S. People that "knew" what they wanted to do change their minds over time too.