Background: The article discusses the implementation of the FACT (Flexible Assertive Community Treatment) methodology in practice and its implications for the care and treatment of individuals with severe mental illness within the community. FACT teams provide long-term care for people with severe mental illness who are not hospitalized in psychiatric facilities, emphasizing rehabilitation in the community. Implementation of the FACT methodology in practice has highlighted the essential factors for care and treatment: Cure, Care, Crisis intervention, Client expertise, Community support; Control; Check – "The Seven C's". All of the aforementioned factors are key components in developing individual treatment plans for each client. Materials and methods: This work was carried out following a literature review, using articles and guides, using articles published in electronic sources. Results: Successfully performing "The Seven C's" requires assessment of needs, coordination and joint planning by the FACT team and the client. Treatment based on the principles of rehabilitation within the community proves to have a higher receptivity and effectiveness of people with severe mental disorders. Conclusions: The study concludes that treatment and rehabilitation within the community offer higher receptivity and effectiveness for individuals with severe mental disorders.