This may be unrelated, but if your social anxiety is caused by fear that your social skills are inadequate, it could be helpful to recognize that the content of what you say matters much more than your presentation. When I'm nervous about my delivery in an upcoming, important conversation, it helps me to remember that some of the most fascinating and accomplished people do not always speak fluently or present well. These people include Elon Musk, Peter Thiel, and Paul Graham, and they certainly have not been held back by any supposed weakness in speaking style. See pg's essay, "Writing and Speaking." http://www.paulgraham.com/speak.html