Breathe. Try grounding yourself. Distract yourself from what you're getting worked up about. Do you like music? Pick something soothing to listen to. I don't know what kind of work you do, but if you can take 10 minutes and go sit in your car with some music, it can be very soothing.

If all else fails, as your doctor about Neurontin. Great for anxiety and nonaddictive!
Take good care,
Okie