A set of internal and external determinants that strengthen a person’s ability to cope with life’s stresses and difficulties, protecting him from a psychological breakdown or the development of chronic psychosomatic or psychological disorders. These factors are not simply fixed or hereditary, but are formed as a result of a complex interaction between a person’s personal structure, life experience, and the socio-cultural environment to which he belongs. All these factors contribute to the formation of a holistic psychological system capable of absorbing shocks and positively adapting to circumstances. At the personal level, positive cognitive and emotional qualities such as optimism, self-efficacy, and the ability to constructively interpret stressful events are among the most important factors in building psychological resilience, as they give a person greater confidence in their ability to overcome crises. In addition, advanced problem-solving, emotion management, and self-control skills help reduce stress and prevent the buildup of stress. At the social level, the social support network represented by family, friends, and community institutions is critical because it provides a sense of security and belonging and serves as a buffer to mitigate the impact of everyday stressors. Positive human relationships, effective communication, and participation in group activities also play an important role in developing a sense of resilience. At the cultural and environmental levels, societal values that encourage patience, solidarity and belief in the capacity for change contribute to building resilience. The introduction of a healthy lifestyle, such as regular physical activity, good sleep and proper nutrition, also contributes to strengthening psychological immunity, as it directly affects the balance of the nervous and immune systems.