David was afraid of what King Achish of Gath might do to him. He pretented to be insane - 1 Samuel 21:12-13
Nothing reveals what's inside you quie like a stressfull situation
David fled to Gath become incognito from the murderous King Saul
King Achish's officers were aware of his true identity and David feared for his life and acted insane
Hardly the kind of behavior you would expect from Israel's next king
David allowed his stress rather than his God-inspired courage to rule the day
You may not be able to avoid stressful situations but you can decide for yourself how you'll respond to them