I Am Beating Social Anxiety
Terence McKenna, a really out there philospher and botanist, would get anxiety attacks around people. He came up with the reality grip test/check: If you can walk into a grocery store (at least a busy one), find what you are looking for and purchase the item without totally losing it, you're OK. I don't know what it is about grocery stores, but I always get apprehensive about visiting them, too.