I worked 40hrs a week while taking 16 credits in community college when I was your age, not because I needed to work that much but because I didn't know what else to do with my time.

And, now I'm an adult without any established hobbies or deep friendships. There's a lot of great advice here about how to increase your earning potential, but don't forget that there's a hell of a lot more to a happy life than what you earn. You have the gift of time right now, that gift won't last forever. Make sure you're building a strong emotional and social foundation as well, because that support will carry you further than any minimum wage job can.