Do not put pressure on yourself about any of what you mentioned. There's thousands of freshmen encountering the same thoughts as yourself. University life is wonderful; some of the best years I've experienced. Socializing comes to you, not you to it. For you to avoid socializing, you have to simply not go to class. Time management; blah-blah-blah. Don't worry yourself with that. It all falls into place. You're either studying, drinking or banging.