Last time we moved (Seattle to San Diego) I went a bit crazy with the downsizing. We shipped a few boxes of small personal things that meant something ahead of time. Sold, gave away, threw away, or burned almost everything else in the house. When it came time to move we put the cat, a bag of clothes for each of us, and my old Martin guitar in the old VW Bug and hit the highways. Took our time visiting old friends along the way and cruising the coast.
It felt so good. In a month's time we went from a 3 bedroom house and garage full of material junk down to what would fit in the bug and a few boxes. It was like all this weight off our shoulders. I didn't want to stop driving when we got here...
Granted we have had to buy a lot of new basic houseware type of things as we need them - but we are a lot more cautious about "stocking up" on material goods now. I finally understand the whole retire and drive around in an RV thing now.