Introverted in College,HELP!?

Well Im trying to come out of my comfort zone Im actually a transfer student going into my Junior in college.My first semester, I was paired up with a roomate who was horrible. I was feeling depressed and my grades went down.My second semester I made the Deans list, but thats only because i had really good roommates and I had a room to myself.I dont really socialize that much I mean i know people, but not alot of people. I tried to say hello to other people and talk, but it felt like I wanted to p out. I decieded to be a lector at my church, I read a page to my church.Im trying, but its like I have to get over this.Im trying to be a fashion buyer,and i know that you have to be outgoing .When it come to speaking to a group of people,i try to avoid that.When it come to meeting new people, i try to avoid that.Speaking up for myself it's hard.Sometimes I feel like Im not intelligent enough.I try to carry on a conversation with someone but its hard. What should I do to develop a strong backbone and have more confidence in myself?