I had the same problem. Its a bit late for you to do what I did but if anyone else reads this it might help them. When picking college/university I went for on

I had the same problem. Its a bit late for you to do what I did but if anyone else reads this it might help them. When picking college/university I went for one where nobody I already knew went. I also lived on campus. The idea was to force myself to interact with others and not live with my parents. I stayed on campus over the weekends and took part in all the dorm activities. It totally worked. I went from being awkward to having confidence. So much so I managed to secure several scholarships the next year including an international exchange program. The result of all this totally changed my life in a positive way. It doesn't take much to change but it will take time and a conscious effort on your part. The only thing I would keep in mind is people have to get something out of the relationship. This applies both ways. You have to give and take.