Oh my gosh, I hear you! I moved 4 times in 5 years, and am so thankful that I BOUGHT this house and won't be leaving it for years and years! Every time we'd start packing, I'd estimate a day or two to box stuff up, and a week later we'd be almost finishing it up.
And I am so not a stuff person. I regularly toss stuff, donate it to goodwill, etc...but WOW does it add up quickly!
Good luck!!!