I've finished as in I have no random crap anymore, like tatty old clothes and undies or piles of takeaway menus - I don't have the 'drawers of doom' or an understairs cupboard full of junk. Neither is my loft crammed with stuff, it's simply our Christmas decorations up there now.
It feels great but is has been hard work, very liberating too, especially to have neat files of paperwork I actually need rather than 19 year old bank statements stuffed in drawers.
With a family and growing kids you have to keep mindful of the process as obviously children grow out of clothes and toys, and our own clothes wear out and need replacing, it helps you to not keep the old stuff.
It's also helped me not hang on to things 'for best' so now I wear my expensive perfume and better clothes and use the best china which makes life nicer in a small way on a day to day basis. Many people continue to drink from the chipped mug and keep their Dior perfume for high days and holidays (then it goes off) so you kind o treat yourself a bit better and also only buy things you really love, not things that 'will do'
In that way it saves cash, I don't spend £10 on Poundland stuff anymore just because it's just a pound and that spreads through te rest of my shopping - good enough is no longer good enough.
It's very freeing to open the wardrobe and know all the clothes will make you feel good.
The FB groups are excellent for inspiration and support - I'm in Kon Marie UK, there are sub groups for shopping ideas and purists.
Marie Kondo has a slightly bonkers tone in the book but if you can get past that it makes a lot of sense, athough her word is not 'law' and I still hang most of my clothes as that works best for me.
Blimey that was a bit of an essay!