This is a problem for many people, so you have plenty of company. However, anger can be controlled and when it is, we become free. I read a book years ago by Ruiz and learned something that literally changed my life. "Never take anything personally." If you work on this, you will live a happier existence. In the words of Don Miguel Ruiz, "“Nothing other people do is because of you. It’s because of themselves. All people live in their own dream, in their own mind; they are in a completely different world from the one we live in. when we take something personally, we make the assumption that they know what is in our world, and we try to impose our world on their world.”
Nothing others do is because of you. What others say and do is a projection of their own reality, Keep calm by taking three deep breaths letting the air out slowly. Visualize yourself calm in a beautiful setting. Clear the inner dialogue in your head.