Do onto others as you want to do onto you.

My twist is:

Do onto others before they do onto you.

Humor welcome.

I have another one from Malcolm in the middle:
Money doesn’t grow on trees,
But then why is orange juice so expensive?

Also it’s not will power but rather won’t power.

The Golden rule. Treat others as you would like to be treated.

The gold rule. He who owns the gold makes the rules.