Abstract: The article deals with the dominant mental state as a factor of overall satisfaction with life. The results of field research carried out in the Sakha Republic (Yakutia) are presented. The social and psychological research sample group consisted of a total 264 people 18 to 59 years of age. Subjective psychological well-being includes two components: a) emotional - the dominant mental state; and b) cognitive - the subjective assessment of the basic parameters of life. The methodological toolkit for measuring the dominant mental state and satisfaction with the quality of life included the methods of socio-psychological diagnosis (questionnaire method, scaling assessment): L.V. Kulikov's method of diagnosing the mental state and N.E. Vodopianova's modified questionnaire "Assessment of the level of satisfaction with the quality of life". The results were processed using mathematical processing methods: the Spearman rank correlation coefficient (rs), the Fisher angular transform (?), the Kruskal-Wallis H test. In general, the respondents are dominated by a positive mental state, the life events taking place are perceived on a favorable emotional background. The women demonstrate higher indexes of activity, inner concentration, optimistic attitude to life, readiness for overcoming difficulties, and confidence in their capabilities, energy, and readiness for work, than that of men. This pattern is also observed in the respondents of mature age and in those residing in the city. Decreased emotional baseline is observed in men, young people and rural residents. In all parameters, respondents mainly showed average scores within the norm: 45.75 on the scale of active-passive attitude to the life situation; 49 on the cheerfulness-despondency scale; 47.56 on the high-low tone scale; 50.07 on the relaxation-tension scale; 50.31 on the calmness-anxiety scale; 50.61 on the scale of stability-instability of emotional tone; 51.67 on the scale of satisfaction-dissatisfaction with life as a whole (its course, self-realization processes); 50.17 on the scale of positive-negative image of oneself. The results of our study demonstrate not only a positive dominant mental state, but also an increase in insensitivity of a significant part of the population of the Sakha Republic (Yakutia) to housing and material problems, as well as a decrease in resistance to manifestations of social insecurity. It is indicative of an increase in anxiety with age, which confirms a sense of insecurity in the elderly. It is also very characteristic that there is an active denial, an unwillingness to discuss social problems, especially those related to governance deficiencies. As a result of blocking the open expression of dissatisfaction, the problem moves "into the sphere of the unconscious" of society, which can lead to increased tension and further escalation of discontent. The mental state of the population is relatively stable and stable in this time period, due to actual satisfaction of primary needs. Keywords: dominant mental state, life satisfaction, life, subjective well-being, material resources, quality of life.