Ha! Great stuff!
I am firmly of the mind that martial arts are fantastic and indeed help with confidence and giving that ability to internalise (in a healthy way) outbursts such as that.
I did Muay Thai and then Kung Fu for many years and it changed me absolutely for the better.
I confess that I too have suffered from incredibly poor judgement at times and sometimes wonder how I made it to this point in life.
Martial arts FTW for defo!!
Cheers!