I mean sure, having happy people around you could make you happy, but seriously? It's nobodys responsibility but your own to make you happy.
If you are a happy person, then other happy people and happiness in general will follow. So that's a way to surround youself with positivity.
But trying to make the people around you happy by supressing their negative emotions (or your own), or pretenting that life is always good, when, really, there's always some shit happening, is bullshit.