Are you introverted? I sure am. I am about as introverted as possible. Now, I have this technique to manage events with a lot of people and it maybe is not the best... When I am around a lot of people, my introvert brain tries to pull the old Over-Correct. Here is the scientific explanation of this condition.
The Introvert OvER-Correct
When faced with a situation where you are going to need to interact with humans, you must discretely hide your fear by being as loud and excitable as possible. This may however, cause people to think you are much drunker than you are. It's fine though, no one cares really, and you embarrass yourself sober anyways so it doesn't really matter.
Moral of the story kids is that interacting with humans is hard but if you fore yourself to do it every once and a while you will find a group of people to scream sing bohemian rhapsody and the fresh prince of bell air with and it will be great.