I get into this mode often. Even after two years in a row giving and selling almost everything I owned to go across the country, I still ha e so much stuff. My daughter has picked up the "keeping everything" thing. She wants to recycle trash as useable items. Our town doesn't really have a recycling place. So, I try to humor her sometimes, though I'd prefer to try to quell this need to keep trash by having recycling bins. It saddens me that where I live is so backwards.
Anyway, got off topic a bit.
Ridding myself of stuff those times really did something to me tho. It taught me what I really felt was important and how much I didn't really _need things. It was freeing.