For me finding the balance between schoolwork and my social life took some doing. It is so easy to fall into the trap that what you are doing is not enough, is not good enough..... It sounds like you are trying your best which is all you can do. I too was shy. I finally found some people who had common interests and friendships started. Do you like sports? Many colleges have intramural programs. I know I played on some of them too. I was an engineering student so who would have guessed I would have found any friends. And those concrete canoe races. How much better can you get?