This says it all for me.

 from Out of Sheer Rage, By Geoff Dyer

The longer I stayed the more powerful it became, this feeling that I was just passing through.... Obviously the way to make myself more settled was to acquire some of the trappings of permanence but there never seemed any point acquiring the aptly named trappings of permanence when in a couple of months I might be moving on, might well be moving on, would almost certainly be moving on, because there was nothing to keep me where I was. Had I acquired some of the trappings of permanence I might have stayed put but I never acquired any of the trappings of permanence as I knew that the moment these trappings had been acquired I would be seized with a desire to leave, to move on, and I would then have to free myself from these trappings. And so, lacking any of the trappings of permanence, I was perpetually on the brink of potential departure. That was the only way I could remain anywhere: to be constantly on the brink not of actual but of potential departure. If I felt settled I would want to leave, but if I was on the brink of leaving then I could stay, indefinitely, even though staying would fill me with still further anxiety because, since I appeared to be staying, what was the point in living as though I were not staying but merely passing through?