Does it really mean that everybody cannot be happy?

Was watching a jap drama today. It was about a girl who wanted to help everybody, to make them all happy. But is it possible? I mean, can everybody be happy? What about human emotion, that's a huge factor in deciding the quotient that is joy. Jealousy? Love? 2 sides of the same coin. Help somebody in love and incur somebody's jealous wrath. Greed? Generousity? Give some pple who need money the cash, making others want it and want it more instead. A single person's life is made either a fraction or significantly better, and many times that have very different repurcussions. In the show, the girl falls in love with a guy. Her fren loves him too. So she denies loving him. The fren hates her for it and tells her to move out of her apartment.

-How can I live with somebody who loves the same person as I do-

Is it worth it? Pple say the smile, the gratitude that comes after is just rewards. What about the hatred and jealousy that comes?

Think about it