Regret

That sinking feeling

Gnawing at your insides

Shrouding every bright spot

Only pieces left behind

"I should have, but I didn't"

"I could have, but I waited" 

"I shouldn't, but I did"

"I didn't, but I wanted to" 

A hollow shell of "if only":

Can it be filled once again?

Time blunders forward,

Its stitches set in stone

Waiting for no one

It gives and takes its breath;

Of fear and hatred and envy

None so relentless as Regret