The Rule of Uno Mas

Being prone to pattern recognition by the fundamental nature of my personality, I will posit this:

The Rule of Uno Mas

"If, at any time, you find yourself thinking or saying 'Just one more....', then quit immediately."

Examples:
"Just one more ski run before we quit."
"I'll have just one more beer..."
"Just one more pull on the wrench and that bolt will be tight."

Nearly every time I fall for Uno Mas, that is where the trouble begins.  I crash into the tree, I wind up too drunk, I pop the head off the bolt.  Watch it yourself - it happens more often than you would guess.

Corollary: "Perfect is the enemy of Good."  I didn't come up with that one, but it is along the same lines.