happiness ...

Having a positive outlook doesn't mean you never allow yourself to feel sad.

"Happiness is not the absence of sadness," 

It is not a stiff upper lip or the pop psychology mantra, intoning "always stay upbeat" no matter what.

"Phony happiness is not good." By suppressing sadness, you suppress other, more positive emotions, as well. So people who try to suppress emotions actually become more anxious and depressed.