[artsyca]

'Happiness' is an overloaded construct; not only does it mean something different to each one you ask, most are confounding it with other concepts such as 'joy' 'contentedness' 'peace' 'excitement', 'fulfillment' etc

The term itself is unique to the English language and is related to the verb 'to happen' and the concept of 'happenstance'

While we use it to mean 'positive' even 'saccharine' things, happiness is more about having a healthy relationship with what's happening around you and being mindful and present in the moment -- it's possible to be sad and happy believe it or not: sadness is an emotion, happiness is a state of mind, they are not mutually incompatible and certainly not polar opposites on some kind of emotional scale (think of the fear and love continuum from Donnie Darko, another example of mixing two unrelated ideas in pseudo polar orbits)

This article already gets off on the wrong foot from the outset by implicitly defining happiness to mean that other thing everybody thinks it means which nobody can agree upon

Even the concept of positive and negative emotions is antiquated, emotions are simply human sensory perceptions that form a heuristic basis of one's environment in non-rational but highly valuable ways, I think of emotions as the human equivalent of IRQ's