Forgetfulness contributes to the maintenance of a positive and coherent self-image (“Guardian”), the facilitation of efficient cognitive function ("Librarian"), & the development of a creative and flexible worldview (“Inventor”)

The Many Faces of Forgetting: Toward a Constructive View of Forgetting in Everyday Life. Jonathan M.Fawcett, Justin C.Hulbert. Journal of Applied Research in Memory and Cognition, January 21 2020.
https://doi.org/10.1016/j.jarmac.2019.11.002

Abstract: Forgetting is often considered a fundamental cognitive failure, reflecting the undesirable and potentially embarrassing inability to retrieve a sought-after experience or fact. For this reason, forgetfulness has been argued to form the basis of many problems associated with our memory system. We highlight instead how forgetfulness serves many purposes within our everyday experience, giving rise to some of our best characteristics. Drawing from cognitive, neuroscientific, and applied research, we contextualize our findings in terms of their contributions along three important (if not entirely independent) roles supported by forgetting, namely (a) the maintenance of a positive and coherent self-image (“Guardian”), (b) the facilitation of efficient cognitive function (“Librarian”), and (c) the development of a creative and flexible worldview (“Inventor”). Together, these roles depict an expanded understanding of how forgetting provides memory with many of its cardinal virtues.
The Many Faces of Forgetting: Toward a Constructive View of Forgetting in Everyday Life. Jonathan M.Fawcett, Justin C.Hulbert. Journal of Applied Research in Memory and Cognition, January 21 2020.
https://doi.org/10.1016/j.jarmac.2019.11.002