@article{Ryff1989,
author = {Ryff, C.D.},
title= {Happiness is everything or is it? Explorations on the meaning of psychological well-being},
year = {1989},
doi = {10.1037/0022-3514.57.6.1069},
journal = {Journal of Personality and Social Psychology},
volume = {57},
number = {6},
pages = {1069--1081},
}