You don't want to depend on still being in the fight after you take one.
Here's the mindset:
I will not quit.
Yeah, I might get hit. I might get hurt. I might have to do things I'd rather not do. I might have to force myself to do stuff that seems impossible. But I will not quit
Unless I am dead, I am still in the fight.
Do not train yourself to quit. Do not train others to quit.