Who said "Courage is doing what you're afraid to do."?

This quote is attributed to Cristina Yang.

Courage is doing what you're afraid to do. - Cristina Yang

"Courage is doing what you're afraid to do."

Cristina Yang Courage

"I'm not just a female surgeon. I'm a surgeon."

"You don't have to see the whole staircase, just take the first step."

"I want to be extraordinary."

"Medicine is a science, not an art. There are rules."

"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."