Who said "You have to be willing to work harder than everyone else."?

This quote is attributed to Billie Jean King.

You have to be willing to work harder than everyone else. - Billie Jean King

"You have to be willing to work harder than everyone else."

Billie Jean King Success

Professional Tennis Player American Born 1943 (age 83)

"Be bold. If you're going to make an error, make a doozy, and don't be afraid to hit the ball."

"Champions keep playing until they get it right."

"I really believe in the philosophy that you create your own destiny."

"The winner's edge is not in a gifted birth, a high IQ, or in talent. The winner's edge is all mental."

"Success comes to those who never give up."

"Success is measured by happiness, not money."

"You make your own luck in this world."

"You have to be organized to be successful in anything."