The trial, sponsored by Region Stockholm, aims to evaluate the implementation of Brief Cognitive Behavioral Therapy (CBT) in psychiatric inpatient care. Given the increasing demand for psychological interventions in inpatient settings and the documented benefits of CBT in outpatient care, this study addresses a significant gap in mental health treatment. The successful implementation of CBT could enhance patient outcomes, reduce readmission rates, and improve overall healthcare efficiency. The findings may position Region Stockholm as a leader in innovative mental health treatment, potentially influencing policy and funding for psychological therapies in inpatient care across Sweden and beyond. The market for mental health services is expanding, and effective interventions like CBT could attract funding and partnerships with healthcare providers and mental health organizations.