Being of service to others helps peaking fears-- it really does, because all performance or social anxiety has to do with being overly aware / overly concerned with oneself.

So the antidote is to to have an attitude of service towards others. Here is an eye opening article about this (written by a nonprofit, so nothing is for sale)-- The Secret of Overcoming Social Anxiety through Service to Others

I completely agree. This is one of the principles I teach my public speaking workshop participants here in the Philippines.