Moving is a change that removes your control. How you react to that is the most important piece.
We had, or I guess have, a lot of crap. Sorting through it, purging, and sorting again, was a months-long endeavor. Still in the end you have lots of boxes, lots of furniture, and ongoing headaches. Unless you are REALLY tossing everything, each person has a different line in the what-to-keep sand.
Letting Go
You don't need it all
Recognizing this up front is helpful. Everything you must have is purely contextual.