Who said "I succeeded because I was relentless in my work."?

This quote is attributed to Joan Rivers.

I succeeded because I was relentless in my work. - Joan Rivers

"I succeeded because I was relentless in my work."

Joan Rivers Perseverance

Comedian and Actress American 1933–2014

"I hate housework! You make the beds, you do the dishes and six months later you have to start all over again."

"Never be angry at a man for his honesty."

"Life is very short and what we have to do must be done now."

"Don't tell me about problems unless you come with solutions."

"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."