The most annoying aspect of an over expression of annoyance or anger is the transition by way of guilt . How one passes from positive to negative emotions I think plays an important part in their behavior towards other people. If I were to get into a positive mood by relaxing, reading, playing golf, etc. and completely moving into a positive mood unrelated to the negative state of mind then the forthcoming actions, when presented with that negative situation, is different than if I convinced myself that I have gone too far and used that realization to further “make up” for my previous over expression of emotion. Thus being able to be overly nice later is not honest because it would not have happened had I not been in a bad mood yesterday. Some people just need to be bitches in order to get to that super nice state of mind they probably wish they could always be in.
In reality, it is best to simply own your bad mood, possibly admit to those who took the brunt of it that you were wrong to get that heated or at least, completely address it to yourself so you can better understand yourself. Then, and this is key, return to homeostasis! Don’t go on a super overly nice spree because it is way, way obvious that your doing it because of yesterday’s behavior and just don’t want to address it by admitting you read way too far into the email for some stupid, emotionally reactive ego protecting reason. Beyond that, you’ll burn yourself out because most probably the people you are now trying really hard to be overly nice to, probably don’t deserve THAT much niceness. Knowing this, you will eventually get bitter and play the game called “Look at how nice I’ve been to you” and end up getting really, really pissed off at nothing once the wick of your Nice candle gets blow out by some common minor annoyance, which, had you been maintaining homeostasis, would have hardly been noticeable.