The ability to take pleasure in one's life is a skill and is a kind of intelligence. So intelligence is a hard thing to evaluate and it manifests itself in so many different ways. I do think the ability to know how to live a life and not be miserable is a sign of that.
I might have some character traits that some might see as innocence or naive. That's because I discovered peace and happiness in my soul. And with this knowledge I also see the beauty of human life.