I can totally relate to you on this. I'm 20 years old and I ave never had a job before and it is not because of my social anxiety; I just have not found anything that I would like to do.
I know how tough/difficult it can be to talk to people because of the social anxiety. Part of my problem is that I have a hard time starting a conversation with someone and having any sort of eye contact whatsoever. I started working on my "shyness" when I was in high school and I am currently in my junior year of college and I still have some issues with my social anxiety.
Anyways, I think you should think about seeing a counselor/therapist about your social anxiety.
I know it can be hard to overcome any sort of anxiety, but it will be worthwhile to start to overcome any sort of anxiety.