I learned 2 things about conflict growing up: avoid it or attack it.
If you are like me you likely did not have good "conflict resolution" role models growing up.
My dad would drink when he was stressed and then he would become verbally abusive.
My mom would gather the kids and hide away in the back room.
Me? I was in between the two and would tell him to "sit down and shut up, you don't know what you are doing, you're drunk!"
In my 20s, I had a boss yell at me in front of patients and colleague for something I did not do.
The only 2 things I could think of was avoid it or attack it. Telling my boss to "sit down, shut up, you don't know what you are talking about" was not a good idea, so I went to my desk, gathered my belongings and went home.
Once home, I realized "holy shit, I am going to be out of a job if I don't go back!" ... I knew I had to make some changes.
I had to muster up the courage to go back and set boundaries or move one. So I crafted my message, rehearsed, and devised my plan. The next day I implemented it and then waited .... to be fired. Guess what? I was not fired and he never treated me poorly again so I continued to work for him. That was just the beginning.