Faith.
A book I'm reading gave me pause to think about "faith". I'm not a religious person by the common definition. I'm an atheist (I used to consider myself agnostic) and doubt that will ever change. But what I do have, I suspect more than most, is faith.
I put my faith in people. You could also call it "loyalty" or "trust". When I have faith in a person it is without question and it is unwavering. It is absolute and strong. I'm not naive, though. I know it can be abused, I just hope it doesn't happen.
Over the years I've placed my faith in a good few people. Most live up to it, some have tested it, a couple have damaged it, but only one person has ever managed to break it.
Breaking a person's faith in another is one of the most destructive things to a person's psyche. The lengths a person has to go to to break my faith are staggering.
It took me a over year to recover from that break. It was, without exaggeration, the hardest period of my life, and it still lingers some days.
That's the problem with faith: it's a double-edged sword that can be so easily used to hurt you if you place it in the wrong person.
When you place your faith in the right person, though - "wow!", it can really make you glow.