The article presents the results of a study which conclusively prove a correlation between self-realization and the individual’s hardiness. It is shown that under certain conditions (in difficult life situations) hardiness as a property of the personality is a predictor of self-fulfillment of the subjects of activity. The article outlines modern trends in research of self-realization in the context of the system paradigm. It further identifies main individual and personal determinants of the manifestation of personal self-realization.