We downsized from a large 4 bed to a 2 bed Park Home almost 7 years ago, got rid of a lot of furniture only taking essentials with us but took everything else as we had a shed & a garage. Gradually we sorted through boxes & got rid of a lot more "stuff".
After DH died I downsized again, most things & furniture went into storage as I hadn't bought anywhere to live
. I was moving closer to DD so I stayed with them for a couple of weeks & then rented a holiday flat. Luckily I found my new home, 1 bed Park Home with no storage. With help from DD we got rid of anything I didn't need, Car Boot, Charity shop & tip also DD sold some large items locally.
I still have a lot of "clutter", I have 2 display cases for my collection of Lilliput Lane Cottages (many were presents from DH). I kept a few keepsakes & photos. I have a lot of my pictures on the walls, I'll never have a minimalist home but I have less possessions now.
I found it hard to part with a lot of my kitchen items, I've kept what I need & can store in my small kitchen, DD took a lot of my larger items.
I wouldn't have moved into London for anything, we lived within the M25 (not quite within Greater London), we moved to Somerset & after I was widowed I moved to a small Town in Devon, total bliss