| Sumario: | Purpose of the study: The aim of the study was to determine the impact of positive psychotherapy of psychosis (PPP) on well‐being in a group of patients diagnosed with chronic schizophrenia. Subjective well‐being was defined by three dimensions ‐ the sense of effectiveness, the affective balance and strengths of character. Study groups: The sample consisted of an experimental group of patients (patients diagnosed with schizophrenia participating in PPP and other therapeutic and rehabilitation classes), a control group of patients (patients diagnosed with schizophrenia participating in all classes except PPP) and a control group of healthy people. There were 25 people in each group. Method: The impact of PPP on subjective well‐being was measured before and after classes in both patient and control groups of healthy people using the following measures: Generalized Self‐Efficacy Scale, Positive and Negative Experience Scale and Strengths Questionnaire (IPIP‐VIA). Results: The subjective well‐being was defined by (a) sense of effectiveness: the experimental group of patients achieved significantly higher level of agency compared with the state before the classes. (b) Affective balance: after the end of PPP classes, there was a sevenfold and 12‐fold increase in the number of positive emotions in both groups of patients. (c) Character strengths: After the end of therapeutic activities, the patient groups did not differ in terms of character strengths. Conclusions: Positive psychotherapy of psychosis may increase the subjective well‐being of patients with chronic schizophrenia. It increases the sense of agency and the number of positive emotions experienced.
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