The idea that the relationship between mental health professionals and patients may be characterized as a form of collaboration has certainly marked a jump forward in how we conceive of and treat mental suffering. Among the various forms of collaboration available in the literature, this paper presents and discusses the premises of a very particular one: co-writing, a specific practice where a clinician and a patient are mutually engaged in jointly or collaboratively writing a narrative related to the patient's experience. For clinicians, nurses, researchers and Mental Health Service managers, attention to the users and the improvement of their active roles represents not only a strategy for the empowerment of results but also the access door to a different perspective in the approach to mental health treatment and research, aimed at balancing the power relation between clinical staff and patients. Co-writing is a method that aims to minimize injustice in mental health by integrating everyone's voices into a balanced narrative (Fricker, 2007).Writing jointly the patient's story, or supporting him/her to do it, including medical records and all documents concerning his/ her mental health, means radically challenging the more often adopted settings and practices where the expert manages the power