Who said "A man who laughs at his own struggles is unbreakable"?

This quote is attributed to Drogo.

A man who laughs at his own struggles is unbreakable - Drogo

"A man who laughs at his own struggles is unbreakable"

Drogo Humor

"I am the stallion who mounts the world"

"A Dothraki hears a word and takes it as a command"

"You are of my blood. That is enough"

"I will take what is mine with fire and blood"

"Never underestimate the power of a good laugh."

"Laughter is the best medicine."

"A good laugh is the best medicine."

"Laughter is contagious and wonderful."