It wasn't easy because I started talking calmly consciously; sometimes it felt like I was learning how to talk again, and I also had to work out how to manage my anger.
I also got feedback that I was getting better. Even after about 8 years after service, last Friday, after I gave an announcement in church, I got a compliment from someone who had known me for a long time, who said I now talk softly and calmly.