Rare people actually end up doing the job they want.
Anyway, first I'd advise you to make a list of everything you're really good at. After that, check if any of those stuff can go together in a harmony (Like good driving skills and good knowledge of your town = Taxi driver material for example). At the end of the day, you should really persist in pursuing what makes you feel good, not what seems like it could make you feel good, but what actually feels good to you. It's dumb to waste money on a college which you applied to just so you don't end up being the ''guy who sits at home doing nothing with his life.''
It is hard to actually know what you want out of life at the age of 18-20, but when the ''click'' in you happens, you'll know. Good luck.