Which rule do you break?

I’ve posted Heinlein’s rules numerous times, but a thred at the Asimov’s forum reminded me of them andyou can never hear them too often so here they are again.
RULE ONE: You must write.
RULE TWO: Finish what you start.
RULE THREE: You must refrain from re-writing, except to editorial order.
RULE FOUR: You must put your story on the market.
RULE FIVE: You must keep it on the market until it has sold.

Number two used to be my big problem. I have a solid rule to never start a new story until the old one is finished now as a consequence.

Which rule do you break? Do you keep tinkering with stories for decades? Perhaps you put them back in the drawer at the first rejection? Or are you a perfect and stick ot them all?