The increasing dynamism, unpredictability and stress of the modern world have impacts on all areas of human life, leading to a generally worsened sense of security, quality of life, physical and mental health, and psychological well-being. A modern person’s living conditions, on the one hand, increase the probability of his/her traumatisation, and on the other hand, expand knowledge about trauma experiencing, which has not only negative consequences, but can also become a source of positive personality changes and post-traumatic growth. Current research on the factors contributing to positive adaptation shows that stress and worsened well-being occur when a person is too sensitive to perceived external stimuli and has insufficient internal resources to transform negative environmental impacts or change them. This section demonstrates the practical application of the Positive Psychotherapy (PPT after N. Peseschkian, since 1977) methodology, its arsenal of methods and tools for examining and developing internal resources for personality resilience, which is a kind of buffer that protects a person from negative psychogenic factors, helps to overcome difficulties without significant losses for mental health, promotes recovery and post-traumatic growth.