This community service aims to build the mental and spiritual health of the community through tazkiyatun nafs studies carried out at the Jami' Nurul Iman Mosque, Telaga Murni Village, West Cikarang. The main problems raised are the increasing psychological pressure and weak spiritual resilience of the community due to a competitive work environment and lack of spiritual development space. This activity uses a Participatory Action Research (PAR) approach by actively involving mosque congregations in every process. Data were collected through observation and interviews. The results showed that the majority of participants experienced significant improvements in aspects of emotional management, peace of mind, and discipline in worship. The study materials include themes such as muhasabah, muraqabah, patience, gratitude, as well as dhikr and tafakur, which are delivered interactively and applicatively. The implications of this activity show the importance of routine psychospiritual development in the mosque environment to form a mentally stable and spiritually strong society. It is recommended that this activity be made a routine DKM program and replicated in other mosques with the support of academics and local religious figures in order to expand its benefits and impacts sustainably.
                        
                        
                        
                        
                            
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