You'll be alright if you study. It is a lot harder than high school, and that takes some getting used to. I know a lot of people who had a rough first semester, me included. You have to get used to a level of work that probably wasn't expected of you in high school. My high school demanded nothing of us, I realized once I got to college.

If you don't feel ready or this semester causes your university/college to give you a temporary break, maybe it'd be worthwhile to do something else until you are ready to put in the sweat equity college demands. Better to save the outlandish tuition expense till you're ready to face that challenge.