This study critically examines the development trajectory of self-help group theory and two tojisha social movements in the field of mental health welfare, with particular attention to their “social change function.” Initially, both self-help group theory and the tojisha social movement, guided the experts’ support, emphasized this function as a core component. However, over time, our analysis finds that practice theories have increasingly prioritized the “therapeutic function,” leading to a gradual marginalization of their transformative potential. Our findings highlight three key points: (1) the importance of the “attitude of waiting and believing in the power and potential of tojisha,” as presented by Teruo Yanaka in his livelihood assistance theory; (2) the tojisha and self-help groups involving the political tojisha social movement, despite being pushed to the periphery of theoretical, they hold practical and embodied knowledge that social workers should actively engage with and learn from; (3) establishing ethical partnerships by listening to the marginalized voices can serve as a foundation for both self-help group theory and contemporary social work practice. Moreover, the concept of self-help and self-help groups can be reframed as reflective tool for social work grounded in the human rights model of disability.
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