Find a place for everything. It is a dandy way to know what you actually need.
There is a great way to declutter your closet where you turn around all the hangers in the closet and after 1 year, whatever clothes are on the hangers NOT turned back around are donated to charity. The same can follow suite with kitchen items. You don’t need 5 platters, ya know? Pick what you like the most and keep it. Duplicates and extra kitchen items can go.
Don’t keep things out of guilt. This is a tough one. See if someone else in the family would like something you have especially if it has been handed down through your family. Perhaps YOU personally don’t have to be the holder of all the antiques and family heirlooms.
Best of luck with keeping everything in its place.