I'd get you a stuffed animal, probably a dog. You could keep it on your desk(s) and think of it when you got angry and frustrated and give it a mental kick :-) I worked with a woman, I was part-time and it was fun for me because I was older and didn't have to work. But everytime she had to go in to see her boss (the executive vice president/co-owner of the company) and get chewed out, she'd come back to our room and yell at me. Didn't matter that it didn't have anything to do with me, she'd find something to criticize but I could see what was going on and am generally laid back and looking for humor anyway so I actually offered myself up as "dog" and told her not to feel bad when she got unhappy to come and be unhappy with me (instead of her kids or actual dogs). Maybe you can come up with a symbol that will grab your eye when you're starting to get embarrassing or immature or whatever you wish later you didn't do and head it off at the pass.

I like to laugh and find amusement with what goes wrong for me and how I catch myself. The other day I was cursing the driver in front of me for going so slowly but thought of "The Universe" and its opinion on such things (how can one know why the car in front is going slow and if it were one's parents or other loved one would we want others yelling at them? What if it was me and I was lost/looking for street numbers/directions, etc.?) but anyway I thought of how it probably would be a good idea if I slowed down myself and weren't so impatient and the car immediately slowed down even further. That got me laughing, "ask for" patience and you'll get something to really be patient about. :-)