This graphic by Verity Harrison document is a testimony of the Co-Researchers’ contribution to CoAct for Mental Health over a long and still unfinished journey from 2020 to 2022. Co-Researchers, people with mental health problems and their families have been the main actors of this research as in-the-field competent experts. The research involved launching a chatbot in Telegram where anyone can listen to their lived experiences and react to them. Co-Researchers have been involved in interpreting the data collected and concluded to make political recommendations and support specific demands.CoAct for Mental Health is part of CoAct (Co-designing Citizen Social Science for Collective Action), a project funded by the European Union’s Horizon 2020 research and innovation programme. CoAct understands Citizen Social Science as participatory research co-designed and directly driven by citizen groups sharing a social concern. We expect to upscale this project at a more global level and to replicate it to other pressing social issues.