to keep a cool head, to keep one's composure
In einer schwierigen oder stressigen Situation ruhig, besonnen und rational reagieren.
To remain calm and rational in difficult or stressful situations.
-
In der Krise muss man einen kühlen Kopf bewahren.— In a crisis, one must keep a cool head.
-
Trotz des Chaos gelang es ihm, einen kühlen Kopf zu bewahren.— Despite the chaos, he managed to keep his cool.