Tao,
I was just thinking about one more thing. I'm not convinced you are an addict.
So many University students wait till the last minute to do their homework, even the mature ones (I know I've been there).
Also, it seems to me that you are branching out now so you are taking steps. Swimming is such a fabulous sport too.
My advice to you, go, enjoy yourself. You'll do the work you have to, I know you will. Have some laughs and some fun with people you enjoy and maybe even closer to your own age lol.
See ya around,