Why do covert narcissists insist they're humble while showing superiority and judgment?

What helps people hold onto their courage after experiencing traumatic events in childhood, like a bad touch?
What strategies can help someone maintain their courage and resilience when facing new challenges in adulthood?
Why do small, silly lies sometimes make us laugh instead of getting upset? Do you have any examples?
Have you ever experienced a moment when someone tried to hide something trivial from you, and it ended up being hilarious?