Who said "I'm going to be a copywriter, and I'm going to be good at it."?

This quote is attributed to Peggy Olson.

I'm going to be a copywriter, and I'm going to be good at it... - Peggy Olson

"I'm going to be a copywriter, and I'm going to be good at it."

Peggy Olson Courage

"I'm not just a secretary. I'm a copywriter."

"You're thinking about this all wrong. It's not about what you want—it's about what they need."

"I didn't come this far to be somebody's girl."

"Every time we get a chance to do something, it matters."

"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."