Parting with 30 years of "treasures", some as much as 50 years since I moved them from TN to VA, was the hardest part for me. Eventually it became liberating. I still ended up keeping too much crap and "tossing" things I needed/wanted later.
The best move I made was finding a guy in my area who cleans out homes. He actually paid me to haul my crap away and left my basement, garage and shed "broom clean".
Good luck!