See http://hackspirit.com/happiness-overrated-finding-deep-meaning-life-comes-4-basic-pillars/:
1) Belonging = relationships where you’re valued for who you are intrinsically.
2) purpose = using your strengths to serve others.
3) Transcendent states = when you lose all sense of time and place and you feel connected to a higher reality.
4) storytelling = the story you tell yourself about yourself.