Who said "Fear is the enemy of peak performance."?

This quote is attributed to Wilt Chamberlain.

Fear is the enemy of peak performance. - Wilt Chamberlain

"Fear is the enemy of peak performance."

Wilt Chamberlain Fear

Professional Basketball Player American 1936–1999

"Nobody roots for Goliath."

"Be the best version of yourself, not the second best version of someone else."

"I am Wilt Chamberlain. Nobody has ever worked harder than me."

"Everybody pulls for David, nobody roots for Goliath."

"Face your fears with courage."

"You can't live your life in fear."

"Snakes. Why'd it have to be snakes?"

"Fear is just another obstacle to overcome."