Don't bother to ring a bell in the ear that doesn't listen. Move to another ear, and if he doesn't listen to your bell, sit back and listen to his nemesis.
~ Michael Bassey Johnson
While you are too busy minding other people's business, who is busy minding yours?
~ Hafiz
To be busy minding other people's business, is to leave one's personal business unattended to.
You would be very surprise with how much positive changes that you could make in your life, if could make it your top priority to mind your own business.