GABA powder for pain. Find Billie Jay Sahleys books. It’s more expensive than it used to be but twenty bucks buys a bottle and a cookie. Magnesium etc.

Smoke an imaginary cigarette to keep from losing it. Practice sometimes. Use a prop. Cinnamon stick works fine. Strike a March or flick your box. Inhale and hold the pretend smoke. Exhale.
Smoke the whole imaginary cigarette.

It’s actually great because you can smoke all kinds of places you aren’t allowed.

Or blow air the way you blow smoke. It calms the central nervous system.

Or sing vooooo in as deep a tone as you can, lips far from your face, like a foghorn. Good to calm, good for the voice, freaks out peoooe who have lit your fuse.