Start with the categories nobody is attached to
Expired food. Dead pens. Chargers for devices you no longer own. Takeaway menus. Hotel toiletries. Odd socks. Instruction manuals for appliances you have replaced.
None of these require a decision, which is exactly why they are the right place to start. You get visible progress in forty minutes and the harder calls become easier.
Kitchen
Chipped mugs, duplicate utensils, lids with no container, containers with no lids, spices past date, the appliance you used twice. Then the "miscellaneous" drawer, which is where decisions go to be deferred.
Bedroom and closet
Anything that does not fit today. Anything with a stain or a tear you will not repair. Worn-out underwear and socks. The aspirational size — the single most common thing taking up good rail space in a closet.
If a full closet is the project, there is a longer method in our guide to organizing a closet.
Bathroom
Expired medication to the pharmacy, not the bin. Makeup past date. Sample sizes you will never travel with. Nearly-empty bottles of things you did not like.
Paper, which deserves its own session
Paper is the category people most often give up on, because it mixes the trivial with the genuinely important. Do it separately, in one sitting, with a shredder to hand.
Most household paper is shreddable. Keep tax records for seven years, keep anything with a raised seal, and ask an accountant about anything you are unsure of rather than keeping it by default.
Leave sentimental until last
Photographs, children’s artwork, inherited things. These take the longest per item and they will stall the whole project if you start there.
When you do reach them, give the category one box with a fixed size. The limit is what makes the decision, not the individual item.
Get it out of the house the same day
A donation bag that stays in the hall for three weeks tends to get unpacked. Book the collection or make the drive the same day you fill it.
This is the step that separates a declutter that holds from one that quietly reverses.