I definitely value my job second to my peace of mind. In one EXTREME surprise situation, I actually said "Do you want me to quit? Is that what you want?" (Oddly enough that's what they did want. And they didn't get it.)

I Quit can also be a fight reaction, depending how it's played. But I do know the feeling well. Gotta run. Gotta hide.

(Usually, I go for a very long walk outside at that point)