Who said "Life isn't fair, but we keep going."?

This quote is attributed to Walter White Jr..

Life isn't fair, but we keep going. - Walter White Jr.

"Life isn't fair, but we keep going."

Walter White Jr. Perseverance

"I just want some breakfast, man."

"You're not even trying."

"I'm awake, I'm awake."

"That's tight, yo."

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."