Plate glass

You greet the barrier with a firm resolve to ingraine every shard into your memory, not just your flesh.
The times you were less than.
The broken fragments you caused.
Promises broken.
Time slows as you watch the first lines of fracture creep from the point where there was a final disagreement, over who could occupy the space. You won.
Congratulations. Now. ..
Comes the rebuttal. Razor sharp and the pain doesn't register. At first.
It will be there later. This, you already knew.
Not like it was the first time. That was different. That one left no scars.
The fracture grows and you smile inside, and out. Because you know that this will serve to keep you from harm. Not being harmed, not harming. Not being the one to drag them down with you.
Only you can survive this decent. The curse was cast on you and alone. It will never lift, only down. Only the ones closest. So, scar and rant, persist to be more than can be handled. And at the bottom, greet the barrier once again, and you will win.