You will get the same old "stay positive" messages, because those can actually help some people. But I'll try to help out. There is a way to help out really any problem, and that's to talk. Talk/vent to a close friend, therapist, or even here (although some people are crazy and intent to harm rather than heal) I'm no professional and get most of my info from experience, but there are actually trained people willing to help.Social anxiety can co away, but only if you take steps.
First off, learn to breath right. Anxiety breathing is all in the chest, and it's a self-feeding cycle - when you're anxious you breath shallow, which makes you more anxious, which makes you breath more shallow, etc. Focus on your breath. If your chest is moving up and down, that's stress breathing. When you breath deep, your belly should expand. Try laying on your back and taking 10 deep breaths through your nose, and focus on breathing deep so your belly rises and falls naturally.Stop caring what other people think of you - This was a big one for me. It's hard when you base your self-worth on other people's opinions, which is usually the root of social anxiety. Just think, there were people out there who hated Mother Theresa! Who are you to think that everyone is going to like you? My point is, there will always be people who don't like the person you are. But they are no authority, and you can be sure there are people who don't like them! You can't worry about what they think. Your opinion of yourself is all that matters (see previous step).Build confidence! - This is the fun one. Build confidence in yourself, but do it for you, not to impress anyone else. Do you feel overweight? Start working out. Do you wish you were stronger? Lift weights. Get a nice haircut, whiten your teeth. This is not for any "shallow" reason, or to impress other people. It is because you are proud of the person you are, and you want to put your best face out there to the world. It will give your self-confidence a boost, and help with your social anxiety without even trying.