I try to remember a time before the ghosts, when everything was young. Can one remember how one's body felt at age 10?

I don't think so.

Can one do the same thing with the soul?

Same answer, I think.

Thus one must learn to inhabit the adult body, or the adult soul. A ghost is a disembodied soul. A body without a soul is dead. But if a soul comes back to its own corpse? That's a revenant. Is that different from being alive? A body occupied by a soul that walks and talks as if living...only the deep wounds will show you something's different....