Quoting Murray:
Happiness is defined simply and unrestrictively as “lasting and justified satisfaction with one’s life as a whole.”
The definition has just one troublesome
aspect, represented by the word “justified.” “Justified” means that it is not enough to feel happy; one must have a plausible reason for feeling happy.
I take my cue from Aristotle and his insistence that human happiness must
be linked to that which makes a human unique: the capacity for rational thought. Happiness must consist of something more than feeling good.
... happiness is never an object that can be captured.