This will keep you from hyperventilating which will only increase your anxiety
. One thing that I know helps many people with social anxiety
is to carry what some call a "comfort stone" with them and gently rub it when the spotlight is on them. This stone should be quite small, it should fit, unnoticed, inside your palm and if it's flat, that is better. Keep your hands in your lap and slowly stroke the stone.........don't rub away at it like you're trying to start a fire!