Quote:
"Most people that are anti-social are conditioned that way because of their experiences. For example, their childhood could have presented them with fewer opportunities for social interaction, their parents might not have encouraged socializing, or they were picked on when they were little and have developed more introvert tendencies. "
Hey, Rocky!
I feel like I'm coming from the same place although we have different issues. During early childhood kids learn valuable social skills by doing rough-and-tumble things like team sports where they interact with lots of other kids. My upbringing was very focused on more withdrawn activities like studying, music lessons, or art, so I was always pretty shy. I'm maybe halfway to dealing with this.
Vakyx gave you pretty much word-for-word the advice that I was going to give, but I would like to add one or two things. A lot of the problems you have stem from fear and nervousness, so you might actually have a social anxiety disorder and want to see a psychiatrist. Also, cultivate yourself by taking on a new hobby. It will get you out of the house, and it will make you a bit more interesting, which will give you a bit of confidence. Also, try less crowded social situations that don't scare you, like maybe hanging out with one or two people. It's a start.