I need a little advise on my future career. I'm halfway through my senior year in height school (17) and have not figured out for sure which direction I want to go. My main goal is to eventually start a business and become my own boss. I have a 3.25 gpa and a 24 act so I can get into most colleges and can get free tuition from most small or medium schools but no free ride.

I've considered going into banking, the stock market, or real estate as I'm great at math. I haven't really found my passion other than I love cars so I would like to own a dealership and love money. I've also considered going pipeline or oil as I see this as the fastest way to 150k a year but that's very hard work. I could do that for 4-5 years and have enough in the bank to start a business.

What industries are growing and would be good careers? What mistakes have you guys made I can learn from and what do you recomend?