Be calm, be collected.
So, don't get hot under the collar:
admire the curving lines of pretty red lights in the traffic jam ahead of you;
smile indulgently at the antics of all the funny little politicians;
wait for the next train;
notice the way the puddles reflect the silvery sky;
have a different sort of sandwich, then.
Make cool the new hot.
Thing To Do Today: be nonchalant. This word arrived in English in the 1800s from France. Their word nonchaloir means to lack warmth and came from the Latin word calēre, which means to be warm.