Measures of subjective well-being typically assess degree of felt happiness or positive emotion. Other measures of well-being focus more on assessing feelings of fulfillment or self-realization. The latter are indicators of what is something called Maslow's Hierarchy of needs or simply Maslow Pyramid, a theory in Psycology.
The feelings of self-realization and fulfillment would,
be in the top of the pyramid, in the self-actualization zone. The feelings of happiness and positive emotion would be right before it, in the self-esteem zone.
