I think that this resilience can be improved by training.

Ergo, if one can be taught that it is possible to jump through fire,
then other things also seem doable. But it has to be something beyond
just being exposed to stress, as some people break down every time
they have a stress. I think that the key is to have stress and win
over something.

Myself, I do not freak out in emergencies, ever, but some people I
know, do.

i