My family always pities us for "not owning much", doesn't make sense to own much if you move/travel a lot. We have the 1 week rule, if you didn't use it all week, seems not to be essential. And this works just fine for us.
The more I own, the more stressed out I am actually. Owning fewer possessions means fewer things to clean, maintain, repair, organize, insure, think about, and feel guilty about. Because everything you own, owns you as well.
Consumer culture trains us to believe happiness is always one purchase away. Or the next purchase away. But it's not that easy, is it?