Earlier this year with the help of my (rapidly slowing down) grandparents, I moved out of a shared house in Santa Clara I'd been in since 2007, back to Washington.
I dumped everything "big", including dresser/desk/bed, and most of my books had never left the family home in Washington.
It took a week (in Santa Clara, not counting driving to WA and unloading), in no small part due to #3. We were in no great rush, mind you, but holy crap. It's incredible what ends up fitting in a ~12x14 master bedroom and a little corner of a garage. And I'd been used to moving with plenty of big, strong, healthy family and friends around.
Hiring movers seems to be a complete crapshoot, but it's probably what I'm going to end up doing if I have to move again.