The Lion King

Timon: "It's "you gotta put your past behind you". Look kid, bad things happen and you can't do anything about it. Right?"
Simba: "Right."
Timon: "Wrong! When the world turns its back on you, it turn your back on the world."
Simba: "That's not what I was taught."
Timon: "Then, maybe, you need a new lesson. Repeat after me. (clears throat) Hakuna Matata!"