Psychologists have thought of a good life in terms of its happiness or meaning. We propose that psychological richness is another, neglected aspect of a good life. In Study 1, we administered an initial questionnaire to a student sample, testing 2-week test-retest stability, convergent validity using informant reports. We conducted further tests of the scale’s factor structure, its correlations with personality and demographic variables, and the generalizability of this psychological richness measure in a non-student American sample (Study 2), a nationally-representative probability sample of Americans (Study 3) and in a sample from India (Study 4). In all 4 studies, a psychologically rich life was predicted by openness to experience, extraversion, and lower levels of neuroticism.