Congratulations, JohnnyO. Even if you weren't the life of the party, it's still a victory (or rather several victories). Sometimes when I have to go out and do something I know will be difficult, I like to think ahead how I will reward myself when I get home. It may be a nice bath or watching a favorite movie, just something that will relax me. Then if the actual event is making me anxious, I can just picture myself relaxing at home afterward and that helps.
Be proud of what you accomplished. :)