Too much "Stuff" is bad.
The corollary: "Stuff" is okay, "Crap" is bad. Figure out which is which.
And the Second Law of Stuff: Most "Stuff" is "Crap".
Out go the videos we never watch, the books we never read, the clothes we never wear. Time to scan the papers we leave around, sample and compress the audiotapes, donate all the tech gear we don't use, et cetera. If we're ever going to move to a new place, we should leave behind the detritus.