One of the fascinating anecdotal situations I've observed in-person and watched on documentaries is those with hoarding difficulties, seemingly instantaneously, recognising their "precious" items are actually just junk.
I pondered this and looked at the similarities in these situations and discovered a commonality. Each time the objects had been removed from their usual location and placed in either another room, outside the home, or in a warehouse.
This change of context seems to impact the relationship the person has with the possession and almost breaks the bond or attachment. It happens in a split second. In fact, I've noticed it in myself when I box up items to take to charity.