Don't over think it. Stay happy, Be positive. College isn't much different from highschool. At least it doesn't feel that different from high school to me (I live in the US btw). Though you may have to study/read more often.
Go to class. Go to next class. Eat food. Hang out with friends. Go to next class. Go home. Study.
If anything, I suggest that if you haven't found something that you really want to do in your life, find something you really want to do and then work your way toward a major that will accomplish that goal. If you don't and change majors multiple times, like a lot of people do (and like I did), you will just add unnecessary stress to your life.