Interventions will be offered in a daily unit setting, which is a part of the Wola Center for Mental Health at the district Wola Hospital in Warsaw. Psychodynamic and cognitivebehavioral group psychotherapy has been provided at the Wola Center since 2011. This method was developed by the current team during the last ten years in another clinical setting. When the research project starts, each group therapy will be conducted by two therapists trained in accredited cognitive-behavioral or psychodynamic/psychoanalytic therapy programs. As is stated in the informed consent, patients will be encouraged not to commence any other therapy in the six-month period after the treatment. In cases of acute deterioration, crisis intervention will be offered. Due to ethical reasons we decided not to ask for postponing other therapy when it seems to be needed. Further treatment choices of the patients will not be controlled.