I've realized recently that I stim all the time, in all sorts of ways (talking to myself, brushing back my hair with my fingers, scratching, rubbing, stretching, moving around, playing with objects, messing with my clothing, picking nose & ears, occasional rocking and/or hand flapping if I'm really agitated, moving my eyes to make light trails into shapes, numbers, and letters, some less acceptable things I don't want to discuss here, etc.), and that I've learned to usually only do the less socially acceptable methods in private, except talking to myself, which I do all the time, even walking down the street, which I guess makes me look a little crazy, but whatever.
I try not to do it if there are other people around, but sometimes I'm so caught up in the conversation I'm having with myself that I don't notice and shut up until it's too late.
I always talk to myself and stim in other ways when I'm working, even if there are other people around.
Yay, stimming!