ABSTRACT Purpose Forensic psychiatric inpatient care in Sweden is characterized by strict regulations and adherence to court-mandated rules, with a median care time of 7 years. Comorbity has significant clinical implications, impacting health and well-being, violent behaviour and criminal recidivism, and prolonging inpatient stays. This study investigated the individual experiences and perspectives of Swedish patients in forensic psychiatric care with substance use (SU) disorders, focusing on past, present and future orientations. Methods Ten male forensic psychiatric inpatients were individually interviewed following a semi-structured interview guide. A qualitative content analysis was conducted to inductively analyse the participants’ experiences. The study adhered to the Standards for Reporting Qualitative Research. Results Under the main theme of “embracing harmony in opposition”, three categories emerged: (1) unveiling the beginning of SU and its impact on navigating challenges in care, (2) exploring current confined care and gratitude despite unease and (3) yearning for a somewhat normal life. Conclusions Participants’ subjective perspectives underscored the importance of factors such as forensic nurses/healthcare providers in forensic psychiatry considering the patients’ life narratives, their aspirations for the future, their need for a secure environment and patient—staff relationships. These findings highlight the need for structural interventions that emphasize the importance of tailored and comprehensive health plans within rehabilitation.