The limits of an explanation of happiness oriented only to external stimuli have been emphasized by several investigators. Diener et al. (1999) noted that “researchers are often disappointed by the relatively small effect sizes for…external, objective variables” (p.278) Schwarz and strack (1999) observed that “the relationship between individuals” experiences and objective conditions of life and their subjective sense of well-being is often weak and sometimes counterintuitive” (pp. 61-62). Lyubomirsky (2011) recommended person-centered research because of “the failure of objective variables to predict happiness” (p. 240). Considering “relatively stable” life circumstances, Lyubomirsky, Sheldon, and Schkade (2005) suggested that “all circumstances combined account for only 8% to 15% of variance in happiness levels” (p. 117).