Who said "Be grateful for what you have, not what you lack."?

This quote is attributed to Ricky Ricardo.

Be grateful for what you have, not what you lack. - Ricky Ricardo

"Be grateful for what you have, not what you lack."

Ricky Ricardo Gratitude

"Lucy, you got some 'splainin' to do!"

"I'm not angry, I'm just disappointed."

"Babalú!"

"This is going to be a great show!"

"Gratitude makes life richer."

"A grateful heart is a happy heart."

"Respect those who came before us."

"Life's greatest treasures are the people we love"