Hey Effie!
I don't know where you're going to college at, or what you're major is, but spend a bit of time observing the people around you.
You will be able to find other students who have the healthy mind set.
The medical students, the sports med kids, the athletes, look for the folks carrying around healthy food, the nutrition students, if your college has a gym, who is working out?
Just observe and you will be able to find all kinds of great friends to help you out. Along with all of us here.
I have kids older than you, lol. But they did the college experience, had a good time,(partied) got a great education and stayed healthy. It's all about finding a good balance.