The trial consists of identifying the presence of cognitive decline and following up on methods of preventing its accentuation through psychoeducation and cognitive stimulation. The trial includes longitudinal assessments of some subjective perception markers and objective assessments of cognitive decline. Furthermore, the study will delve into the dynamics of these markers, revealing alterations in the psycho-affective state. The study aims to assess the impact of interventions on the cognitive decline associated with cancer and its treatment, as well as the role they can play in improving breast cancer patients' quality of life.