Who said "You can do anything if you set your mind to it."?

This quote is attributed to Iron Man.

You can do anything if you set your mind to it. - Iron Man

"You can do anything if you set your mind to it."

Iron Man Motivation

"I am Iron Man."

"Genius, billionaire, playboy, philanthropist."

"I'm not the one who should be worried."

"This is the most important thing I've ever done."

"I believe in working hard for what you want."

"Never underestimate the power of determination."

"I don't need a reason to fight."

"The most important thing is the mission. Nothing else matters."