[elmolino89]

Small thing: keeping old books is a bit like a physical memory palace. Granted, it may be pointless/way to costly to cling to a collection of say outdated books read as an adolescent, but we tend to remember better if we can access at least the visual image of the cover.

So my advice is to take the pictures of book covers you have to get rid of. And organize them be it by the time period you have read them, topic or something else. One day you may be able to fish out memories you didn't think exist anymore.