im the same mate i cant sleep if i know im going to be in a social situation ill stay up all night trying to think of things to say in conversations and other peoples reponces i usually end up having a panic attack;
what got me through a seaon of rugby was listening to relaxing music on the way to training ,work matches and focusing on my breathing and then giving myself words of encouragement before entering a room it helped sometimes with my anticipation anxiety and getting me to social events like training but not with the nerves when i was there.all i can say is to try and get yourself help.
i went through what seemed like a mid life crisis (im 22 lol) a while ago i have spent the last 3 years of my life in my house by myself on a friday and saturday night while my younger brothers go out with there mates,i decided that i dont want to be alone when im 40 (no offence to anyone that is)with no girlfreind or wife that i dont want be a slave to my anxiety but i understand that it is easier said then done i made my first appointment with my doctor "to get help" 4 months ago and i still havnt told him about it i always make up some other reason for seeing him.
it may sound bad but thinking of people that are in worse positions then myself puts my problems in perspective and i then think to myself stop feeling sorry for yourself and do something about it.the only way your problem is going to get better is with help.what has given me encouragement recently after i fiound this site was the realisation that i am not alone and there are a lot of people out there with the same issues as me like yourself.