GPS Group Peer Support (GPS) is a mental health intervention that mitigates the long-term effects of stress, strain, and trauma. Incorporating elements of mindfulness-based stress reduction, cognitive behavioral therapy, motivational interviewing, peer-to-peer support, psychosocial education, and other evidence-based modalities, GPS is designed for the rapid implementation of essential mental health support during times of stress, crisis, and change. The GPS model has been successfully implemented among diverse populations including parents dealing with postpartum depression, residents of rural areas living with chronic conditions, people dealing with substance use disorder, refugees, survivors of war, and people facing oppression based on their racial, sexual, gender, religious, or other identities. It can be delivered by mental health clinicians or trained, non-clinical workers with relevant lived experience.