Who said "I believe in myself because I've put in the work."?

This quote is attributed to LeBron James.

I believe in myself because I've put in the work. - LeBron James

"I believe in myself because I've put in the work."

LeBron James

Professional Basketball Player American Born 1984 (age 42)

"I'm off the court just trying to be the best father I can be."

"You can't be afraid to fail. It's the only way you succeed."

"Everything negative – pressure, challenges – is all an opportunity for me to rise."

"I don't know how tall I am or how much I weigh. Because I don't want there to be any limiting factors on what I can do."