Marie Kondo tells you to declutter in categories... she suggests you start with clothes.
So - you get ALL your clothes into one space - your coats from the hall, your hat from the car - the whole caboodle onto the bed. Maybe treat handbags and shoes and jewellery as a separate category if you have loads.
(Woo Alert)
Then you go through everything carefully, asking yourself if it sparks joy. Hold each piece and make your decision. If it is something you used to love or use a lot, but have no use for it now, you must 'thank' the item before putting into the Ebay/ chazza/ dump bag. She says we rarely get it wrong!
She has a folding method which has transformed my knicker, bra and sock drawer - that has actually remained organised for 18 months! Ditto my tops and t shirts. I can find everything at a glance. Makes packing a doddle, too. DH even a convert.
Anyway, repeat through various other categories (books, paperwork...etc) until you reach the 'end' of your house.
I belong to a FB Kondo group, and when people finish doing it, they chuck out their partners (very occasionally!), they lose weight, they find new jobs - all sorts!
I did my house 14 months ago, and gave some stuff a reprieve. That stuff will now go. I plan to go through all the categories again in the new year.
I so, SO need to get back out to work again, but with DF hanging on, I figure I may as well get my house in order while we wait for "it all" to be over.
Its a very cleansing process in more ways than one.
(I am available for further consultation, and do wonder if I should not become a professional de-clutterer?)