People with mental disorders face frequent stigmatizing attitudes and behaviors from others . In response to this, they tend to isolate themselves, with the risk of impeding care and the process of recovery and integration into society . Stigmatization can also be assimilated by patients themselves - i.e. self-stigma. Self-stigma is involved in diminished coping skills that lead to social avoidance and difficulties in adhering to care . Reducing self-stigma and its emotional corollary, shame, is thus crucial to attenuate the disability associated with mental illness. Shame is inherent to self-stigma and leads to difficulties in adhering to care as well as greater severity of clinical presentations . Compassion Focused Therapy (CFT) is a third wave cognitive behavioral therapy that targets shame reduction and hostile self-to-self relationship and allows for symptom improvement while increasing self-compassion, a major resilience factor . Although shame is a prominent part of the concept of self-stigma, the efficacy of CFT has never been evaluated in individuals with high levels of self-stigma. In this study, the investigators will evaluate the efficacy and acceptability of a group based CFT program on decreasing self-stigma, compared to treatment as usual (TAU) and a psychoeducation program whose efficacy has been assessed in a previous trial.