Good, Better, Best. Never Let It Rest.

Just heard this saying on the TV that my dad always used to use.

Good, Better, Best. Never let it rest.
'Til your good is better and your
better is best.

It's another one of those phrases I thought he made up, just like I thought he wrote "Me and Bobby McGee," since he always sang that song in the shower, but only sang the first few lyrics, "Busted flat in Baton Rouge, waitin' for a train."

Still not sure who said this quote first, but it always reminds me of my dad.