I'm sure your therapist told you this already, but the best thing to do with stress is to drop it on the floor. Stress is a reaction to something that triggers your "fight or flight" instinct. Obviously you can't get into a fight over it, so that leaves flight. I don't mean running out the door and down the street. I mean walk away from what is stressing you. Go somewhere quiet until you get your **** together. If you can't do that, step back from what is stressing you, count to ten, take deep breaths. Think about your happy place. Whatever works for you. Do what you need to do to keep your mind from running you down the halls of anxiety and panic.