pain

It's hard to describe in black & white (or the spoken word) exactly how "It" feels.

"It" being a sense of pain, but not the tangible kind that comes with a physical injury.
It's like a permanent emotional scar that aches, waiting to be opened up, inverting until it swallows you whole and there is nothing to do but allow yourself to be washed over with pure despair and mental agony.

I'm on the edge, and even that is enough to make me want to stop feeling. Completely.