Anger usually acts as a pressure valve for stress you have been carrying too...

https://remote-wiki.win/index.php/Anger_Management_vs._Just_Counting_to_Ten:_Does_It_Actually_Work%3F

Anger usually acts as a pressure valve for stress you have been carrying too long. You might notice it in a tight jaw, stubborn shoulder tension, or restless sleep. It is not about silencing your voice