BP's have trouble letting things go that upset us. I find it hard to determine in advance what may do this. But since it is a pet peeve of yours and you know you might get po'd you can remove yourself from the situation. I take a walk or listen to a 10 minute meditation cd. I have yelled at my boss, but don't do that anymore using the above techniques. Unless you are doing surgery or something you can probably walk away and collect yourself.
Parts of our brain are on overdrive like impulse control and fight or flight, so that probably will not change, but we can try things to avoid going off.