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Pros: Good music, atmosphere, idea.
Cons: The actual lesson is a bit confused.
I am going to agree with "cantbelieveit", and although one shouldn't pretend to be happy all the time, a genuine smile is better than sadness in my opinion. But I think I see then general idea you were trying to get at. I mean, it's called "Patience" so I assume you were trying to say something to the effect of "It's better to be sad then to shoot someone, because in the end things will work out"? Which...has some kind of logic to it I guess. You shouldn't want to shoot people to begin with, and there are more healthy ways to express your sadness than just internalizing it.
That aside, continue with the your work, you've got promise. I like how you did the blathering of all the other people.