Who said "The most important thing is to never stop trying."?

This quote is attributed to Johnny Cash.

The most important thing is to never stop trying. - Johnny Cash

"The most important thing is to never stop trying."

Johnny Cash Perseverance

Country Singer Songwriter American 1932–2003

"I keep a close watch on this heart of mine"

"You build on failure. You use it as a stepping stone. Close the door on the past. You don't try to forget the mistakes, but you don't dwell on it."

"I'm just trying to matter and leave my mark for good."

"The greatest gifts are those that come from the heart."

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."