Who said "The hardest fights are the ones against yourself."?

This quote is attributed to Superman (2022).

The hardest fights are the ones against yourself. - Superman (2022)

"The hardest fights are the ones against yourself."

Superman (2022) Courage

"I'm not just a reporter anymore. I'm a father, and that changes everything."

"Being Superman doesn't make me invincible. It's the people I love that make me strong."

"The truth matters more than the story. Always."

"I've learned that power without purpose is just destruction."

"Never let fear stop you from chasing your dreams."

"Courage is being afraid but doing it anyway."

"Sometimes you gotta do what you gotta do."

"Sometimes you have to be the monster to stop the monsters."