Happiness is the state you want to reside in for as long as possible. That is ultimately why you are on this site. There are several ways to get there. Here are some perspectives on Happiness:

“Happiness is just a state of mind.”

This is a (mis) quote from a deceptively profound R’n B track by Lamont Dozier, called Going Back To My Roots. The song is described in Wikipedia thus: ‘the song….touches on the matters of self-identity, family, and soul fulfilment’. Here is the clause set in the context of the verse:

“I’ve been living in a world of fantasy / I’m going back to reality / I’ve been searching for riches I had all the time / And finding out that happiness was just a state of mind”