I really let loose these last days. My irritability went sky high and I responded in kind. I don't regret taking action but perhaps the severity could have been toned down a great deal.

(1) a very expensive art class that was a major flop. I responded by writing a rather high pitched angry letter demanding my money back; (This is understandable--you paid money for something you do not feel you received--although, as you say, maybe a tone or two down would have been better.
(2) being stranded in my car in the middle of a marathon race. I responded wth another harshly worded letter to the organisers; (see end...)
(3) being stranded in my driveway by a car parking across it. This lead to an angry letter on the windshield; and (see end...)
(4) my taxi being very late resulting in an angry tirade to the dispatcher. (see end...)

Aaarg and grrrrrr