Quite frankly, this is a worry for me. I have noticed that I've become shorter with people and less tolerant as I've got older. I've started to feel some resentment in certain situations where I felt I was being unfairly treated.
I recognise these feelings and things, which I am grateful for. So I work hard to correct this, and I hope I succeed, but I seriously worry about my brain changing and becoming someone quite unpleasant. You look at people from the outside, and it is so easy to judge, but we're all just a big bag of chemicals and physics. Personality change does happen, it could happen to any of us.
I gave up caffeine, and the rages completely vanished.
Worth a try?