We all lose things along the way. Sometimes they're small things, like toothbrushes and pens and socks that disappear without a trace. Sometimes they're larger, like car keys or credit cards. But the worst things to lose are the immaterial, the things that were almost palpable, but hovered just out of the reach of your fingers. Sometimes it's deliberate.
We shed, you see, the way snakes and cicadas shed their skin, leaving imprints of ourselves behind, even as we venture on, altered. Humans are volatile things, and sometimes will try rid themselves of things that aren't ready to be gone; those people are left with gashes through their flesh and thoughts that run around in circles.
But sometimes people will lose things they weren't aware they had, those intangible things that sit in the back of the mind, ghostly companions to the conscience. And those people have lost the most grave thing of all: themselves. But not all who are lost need to be rescued. Some just need time to reorient themselves.