Who said "Don't watch the clock; do what it does. Keep going"?

This quote is attributed to Law, John.

Don't watch the clock; do what it does. Keep going - Law, John

"Don't watch the clock; do what it does. Keep going"

Law, John Perseverance

Sociologist-Philosopher British Born 1954 (age 72)

"Money is the sinews of action"

"Knowledge is power"

"The love of money is the root of all evil"

"In the midst of winter, I found there was, within me, an invincible summer"

"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."