And I caught myself

Awhile ago, I was watching my One Tree Hill on the web. I lost my concentration on watching it and all of a sudden, I caught myself daydreaming of myself in college. I know this doesn't have a connection in watching One Tree Hill but hey, I'll be graduating very very soon. I knew that I had a lot of things that I never done in high school and for some reasons, I'm regretting that I didn't make the most out of it. College is just months away and I wonder, how would I make my college life meaningful?