Organizing doesn’t always mean getting rid of things. It means finding places for them so that you aren’t tripping on them, distracted by them, maneuvering around them or always looking for them.
You do need space to put things if you’re keeping them, however. I wrote a post back in June about curating your environment. Another aspect of that is cycling your possessions in and out of storage.
To continue the museum metaphor, it’s like treating your home like the Smithsonian Institution (the world’s largest museum collection). With the Smithsonian method, you have a moderate number of things on display at one time, for example. The rest, the majority, is in storage.
Every season, or twice a year, you put those things back in storage and select a new group to bring out and enjoy. There are two nice benefits here: you get to keep your beautiful things and you get to appreciate and get pleasure from them all over again. Even wonderful artwork starts to go unnoticed when it’s always there.
This way, your living space will be more like an art gallery, less like a warehouse.
Imagine visiting the Smithsonian’s basement and looking at objects set three deep on shelves that go up to the ceiling. Compare that with visiting the museum proper, where objects are placed so that you can really see and contemplate them.