The more possessions you accumulate, the more of your environment becomes inventory.

Past a certain point, your home stops being a place and starts being a catalogue. You know where things are, you plan around them, you move them to reach other things. The mental overhead is not dramatic, just constant, and it grows with every arrival while nothing leaves.

Notice whether you are managing your rooms or living in them. One useful practice is to let nothing new in without something old leaving. It slows accumulation without demanding a purge, and it makes you weigh arrivals honestly.