"But why do my guts practically turn inside out whenever I hear his voice get intense, his nasty words take on my actions, his blame lay at my feet... ugg.."
This comes from past experience. The Expectation.. that something will be different.
What if his nasty words are honest?
What if they don't take on your actions?
What if his words are not intense?
What if... He blames himself?
"I am beginning to feel pity for the man. But it is his pool to get out of not mine."
Someone.. once posted about a Lifeguard. A Lifeguard.. will keep throwing you something to grab hold of.. until you get it.
They always understand.. you gotta grab the "something".
Even if you barely hold on.. they will encourage you.. to do better.
^
Relax Eat Think Act normal React.. Smartly. Do something different. Emulate. Do Work.