Background:This study aimed to investigate whether people with BPD can benefit from reliving positive autobiographical memories in terms of mood and state self-esteem and elucidate the neural processes supporting optimal memory reliving. Particularly the role of vividness and brain areas involved in autonoetic consciousness were studied, as key factors involved in improving mood and state self-esteem by positive memory reliving. Methods:People with BPD (BPD, N = 25), Healthy Controls (HC, N = 33) and controls with Low Self-Esteem (LSE, N = 22) relived four neutral and four positive autobiographical memories in an MRI scanner. After reliving each memory mood and vividness was rated. State self-esteem was assessed before and after the Reliving Autobiographical Memories (RAM) task. Results:Overall, mood and state self-esteem were lower in BPD compared to HC and LSE, but improved significantly after positive memory reliving. Moreover, participants with BPD indicated that they relived their memories with less vividness than HC, regardless of valence. When reliving (vs reading) memories, participants with BPD showed increased precuneus and lingual gyrus activation compared to HC, which was inversely related to vividness. Discussion:People with BPD seem less immersed in reliving neutral and positive autobiographical memories with increased precuneus activation potentially indicating more distant autonoetic consciousness. Nevertheless, participants with BPD do benefit in mood and self-esteem from reliving positive memories. These findings underline the potential of positive autobiographical memory reliving and suggest that interventions may be further shaped to improvet mood and strengthen self-views in BPD.