Hi, EFT and Affirmations have helped me a lot on this same issue you are having, it can change you profoundly, its fast and efficient, altough it looks weird, it really works,
EFT Provides Impressive Health and Emotional Freedom--New Discovery Often Works Where Nothing Else is the oficial site,
Tapping.com - Free EFT Videos - Emotional Freedom Technique for some free videos to get started quick.
You should also make the effort to get out of your confort zones, and read a book about socializing, i recommend one called "how to win friends and influece people" by dale carnegie, its great, it taught me a lot, getting rid of your limiting beliefs is part of your growth, the other part is actually doing things to put to practice what you learn, this can be tough too.
Good luck, and if you care come back to tell us of your sucess with eft