If you can keep your head when all about you
Are losing theirs and blaming it on you,
It is a quality that is mentioned often among people who are actually doing a particular job, but I don't think it is much in the national conversation of what we should teach children or "what skills employers are looking for." It is as if we forget about it when discussing abilities in theory, but have face-palm moments when we suddenly need it in practice. We very much admire it in others.
I have heard that it is a military saying that "You will not rise to the occasion; you will revert to the level of your training." That is very much true in dealing with acute psychiatric crises. While it is true that some people seemed to be better wired for calm and others for panic, training, rehearsal, and forethought are not optional.
As our pace increases, I expect the importance of this quality will likewise grow.