“Precious memories” is a training in autobiographical memory for older persons. Its goal is to decrease depressive complaints. In five sessions, participants are trained in recalling specific positive memories. These are unique positive memories that happened on a specific day in the life of the participant. The training can be implemented in care and social work. A unique feature is that trained volunteers provide the training to the participants. The products consist of a description of the intervention and its implementation, a manual and protocol for volunteers as well as a training and e-learning for volunteers.