It's hard going from highschool (or equivalent) to University. Normally, in highschoo, it was much easier to have confidence and have a sense of individuality, because there were less people to contend with. University throws all that out the window.
You have to realise that nobody is inherently better than you are. A good way to do this is to join clubs/teams/organisations where you can put your talents to work. This is what I did (I felt the same as you during my first year), and it worked wonders.
Also, most universities are great for providing counselling services. You should definitely look into it! They give you great ways to rearrange your life a bit to make you happier... seriously, the tiniest little details can make you feel so much better. It's nice to just have someone qualified to talk to as well.
I hope this helps!