I’m a firm believer that physical stuff also occupies a place in my mind. Clutter and disorganization requires me to spend time and energy thinking about things that aren’t my priorities. I’m always interested in ways to make my life simpler, and that includes reducing the amount of stuff we have.
My wife wrote a wonderful article about the work we’ve been doing (by which I mean mostly her) to simplify our house and life. She says it well, so you should read it here.