The missing piece

You finally see the ending coming. You've put so much work into it lately, and you just can't wait to be done, and feel happy about what you accomplished. It's finally complete. Or so you think. Only four more to go now. But wait, what was that?

Crap

Only three pieces are left. You put them on, but it's not right. The last one isn't there anymore, and it's never gonna be complete. You can make your own pieces that will fit, but they will never fit perfectly. Simply because it's not the missing piece.

All the pieces were there from the beginning. At the time it was all messed up, and when you've finally got it all in order, one important piece is missin.

The puzzle will never be done. There will always be this nagging feeling inside you. Telling you over and over that the puzzle isn't complete. Unless you find the right piece.

But it's too late, it's lost. Gone forever. The puzzle will never be finished the way it's supposed to be.