I would argue that the best course of action (in general) is to not use your emotions at work. Software development as an engineering discipline is best done in a dispassionate state. I can logically defend the decisions that I've made (and learned from the wrong ones).
Since you've been working for many years, practice this exercise when you start feeling angry - think of a time in the past where you were also angry and think of the outcome of that episode. You'll find that the emotion really doesn't help the situation and have to assume that it won't help the current situation either.
I'm not saying that you should be a Borg at work - it's good to feel emotions. But you're going overboard and eventually it will harm you (or already has).
Since you've been working for many years, practice this exercise when you start feeling angry - think of a time in the past where you were also angry and think of the outcome of that episode. You'll find that the emotion really doesn't help the situation and have to assume that it won't help the current situation either.
I'm not saying that you should be a Borg at work - it's good to feel emotions. But you're going overboard and eventually it will harm you (or already has).