Who said "Work hard on what matters. Let the rest go."?

This quote is attributed to Hawkeye (MCU).

Work hard on what matters. Let the rest go. - Hawkeye (MCU)

"Work hard on what matters. Let the rest go."

Hawkeye (MCU) Work

"I'm just a guy with a bow and arrow."

"Somebody's gotta save the world."

"I don't care about the odds. We've beaten worse."

"Family isn't just about blood. It's about who shows up."

"Hard work never killed anybody."

"Work with purpose and integrity."

"Hard work pays off in the end."

"A man's gotta do what a man's gotta do."