Find a quiet spot and try to calm yourself down, I think that's really all you can do.
If stimming helps, do that. I can relax better when there's no one around to watch me freak out for a little while. Try to distract yourself from the source of your stress,then try and regain your rationality. And once the day is over hide out in your room/indulge your special interest to recalibrate!
I know it's very difficult, I have the same problems. And if you're rude, so what? Everyone has bad days.
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ISTJ / ASQ = 37/50
AQ = 143/200 NT = 62/200
?Perhaps one did not want to be loved so much as to be understood.? George Orwell, 1984