“Does it spark joy” is very useful heuristic. But what about things that have an emotional attachment? Or were really expensive?

I’m working my way through “it’s all too much” ( https://www.amazon.com/Its-All-Too-Much-Living/dp/0743292650) and it has some great tips. If something is emotionally valuable you better be displaying it or treating it like it’s valuable. If you’re not it’s probably dead weight. If something was costly but you’re not using it, you’re paying MORE for it by storing it indefinitely. And so on. Tips on how to talk about clutter with the family etc. Very useful book.