Introduction One of the most traumatic experiences a person can have is losing a loved one, which may substantially affect their physical, socioeconomic, and emotional health. According to the World Health Organization (2017), approximately 300 million people are suffering from mental health problems due to traumatic experiences. Purpose: The current study will provide insight into how to improve the social, emotional, and psychological well-being of bereaved families, which will ultimately result in their mental well-being. The purpose of the current study is to determine whether six weeks of positive psychology intervention, comprising, mindfulness, spirituality, physical activity, happiness, gratitude, and social support can assist in enhancing mental health. Methods A quasi-experimental Study on the females of bereaved families (18 years and above, wife, mother, daughters, and sisters) living within premises of Karachi, (Sindh), Pakistan. The non-probability (consecutive sampling) will be used to select the study participants. The participants will be divided into two groups. Data will be collected from the wait list control group participants during the May 2023 –June 2023 baseline and only a booklet of self-care strategies will be given to all participants and post-intervention after 6 weeks (T2) and 12 weeks (T3) and they will receive intervention in 6 sessions after the completion of the study. From July 2023 – August 2013, data will be collected from the intervention group participants at (T1) pre-intervention then intervention will be given in 6 sessions, and then at the end of intervention (T2) 6 weeks and after 12th weeks (T3). The acceptability, and applicability of this intervention will also be assessed quantitatively via a questionnaire on a 1 to 4 Likert scale Dissemination The perceived stress of losing a loved one affects family members' health and well-being. The development of a positive psychology-based training module and testing its efficacy and feasibility to improve the mental well-being and life satisfaction of bereaved families. Moreover, opportunities to interact with people of the same background will enable women to develop coping strategies to deal with the stresses and enhance their subjective well-being. This study will considerably contribute to the global body of knowledge on the effectiveness of positive psychology interventions as a viable method for managing the psychological repercussions of sudden bereavement in low-resource settings Conclusions: Results will assist the work of researchers, clinicians, and policymakers to support the implementation of effective practices and improve the quality of services for bereaved families.