A correlation analysis of a heterogeneous sample of religiously active individuals provided two main findings. Firstly, persons determined to be more psychologically mature were found to be happier. This finding held for both a Maslovian measure of motivational maturation and for a measure of religious maturity developed by Allport. Secondly, the meaning of happiness, or at least the meaning of our measure of well-being which we used to index this trait, appeared to change as individuals became more mature. For mature individuals moderator analyses indicated that apparently greater discrimination was made between simple well-being and the basic acceptance of oneself. The personological tradition offers theoretically meaningful accounts of both this form of intrapsychic specificity as well as of the simpler more nomothetic relations of maturation and happiness.