According to some studies, the phenomenon of professional burnout has reached epidemic proportions in today’s world. This applies in particular to those whose jobs involve saving lives: firefighters, police officers, and doctors who perform operations as well as members of the so-called social professions, which are based on close relations with people. This also includes therapists.

In the context of the socio-political instability that exists in Ukraine, the problem of stress resistance among psychological service professionals has emerged. The aim of the research is to analyse the professional activity of psychologists in Ukraine at the present stage under the influence of stress factors. The following methods were used to study the nature of stress and its impact on the personality of a psychologist: analytical and synthesis methods, statistical, comparative, survey and interpretive methods. The research results theoretically reveal the peculiarities of the concept of stress, the stages of stress development, and identify the main stressors of professional activity. An empirical study of the stress resistance of psychologists was conducted. The influence of stress on the quality of psychological care was determined. Professional qualities in the psychologist's personality structure were identified, the phenomenon of professional exhaustion, the role of countertransference in counselling were studied, the importance of the code of ethics for psychologists and its violation in the course of practice were revealed. The importance of interventions and supervision as a means of psychological support for the professional development of psychologists was investigated, and statistical indicators of the level of stress were analysed. The practical significance of the research is determined by the current coverage of the problem of the impact of stress on the professional activity of a psychologist and in the creation of effective ways of emotional self-preservation and development of stress resistance, which provide the search for their resources for self-healing and effective work.