How to be a outgoing, nicer, and friendly person?

I dont talk because im shy, fearful, jealous, and i am angry. hmmmm......i want to change before i end up being miserable and alone till im 86 because i shouldnt be feeling this way at age my young age.......im 19.. Ive been this way as long as i can remember and now im in college and dont know how to change. I love you guys right now and would really appreciate some help.