It's a Wonderful Life1946

George:
Look, who are you?

Clarence:
I told you, George. I'm your guardian angel.

George:
Yeah, yeah, I know. You told me that. What else are you? What...are you a hypnotist?

Clarence:
No, of course not.

George:
Well, then, why am I seeing all these strange things?

Clarence:
Don't you understand, George? It's because you were not born.

George:
Then if I wasn't born, who am I?

Clarence:
You're nobody. You have no identity.

George:
What do you mean, no identity? My name's George Bailey.

Clarence:
There is no George Bailey. You have no papers, no cards, no driver's license, no 4-F card, no insurance policy...They're not there, either.

George:
What?

Clarence:
Zuzu's petals. You've been given a great gift, George. A chance to see what the world would be like without you.