“Oh, confidence isn’t something you’re born with. If you have it from the beginning, it means you’re a fool,” HanChol said slowly, organizing his thoughts. “There are just two things in the world that give you true confidence. One is overcoming difficulties on your own, and the other is being deeply loved. If you experience both, then you will be confident for the rest of your life.”
Beasts of a Little Land by Juhea Kim
How to be confident
My Book Joy 