How one behaves is their CHOICE, How you respond, is yours...

He's got great composure. He's always cool and calm. He's been a great leader for this offense. That's a big part of the success he's had so far.

If we are calm," replied the policeman, "it is the calm of organized resistance."
"Eh?" said Syme, staring.
"The soldier must be calm in the thick of the battle," pursued the policeman. "The composure of an army is the anger of a nation.

You come out of that with a feeling of relaxation and peace. That's very helpful.

Losing your head in a crisis is a good way to become the crisis.

Always behave like a duck- keep calm and unruffled on the surface, but paddle like the devil underneath.