For me, it would be "don't get stressed." er, anyone got any ideas on how not to get stressed, when even unstressful things can stress me?
Less flippantly, my tremor is in my non-dominant hand - giving it something to do, like putting it in my pocket, sitting on it, pressing down on a table seems to work and be fairly unobtrusive. But other activities make it worse - giving it a piece of paper to hold (waves abut like a flag of surrender), or trying to type (keys rattle like automatic gun fire).
Having the right meds (whatever that means for you) helped me, too.
i learned these tips through trial and error - maybe that's a tip in itself.
Best wishes - and let us know what works for you.