How do i figure out what career is good for me?

I've been deciding since i was 11... Financial advisor to MD doctor to Investment banker to Business manager to a whole lot more... Now i'm 17 going into University of Michigan and i still don't know what i want to be. I've always cared about the big money (at least 6 figures by the age of 30) and that is probably the only big thing i want in a job. Yet i still don't know what to do... Any advice please?