I tend to use the house cleaning part of the Holiday Grand Plan during the year - do 1 room a week (14 weeks, includes attic, garage and garden, and kitchen is split between actual kitchen and "pantry" so food cupboards separate to prep/cooking space), taking the week to do it in small steps per day.
Only pull out as much as you can finish at once - so do 1 drawer and finish that before starting the next.
Take breaks, have a drink on hand to keep swigging (water, juice, tea). Play a good audiobook/podcast/music with a beat to suit your pace of work.
Have a 4 box method - trash, wrong place, donate, return. So empty a drawer, rubbish in the trash box, things in good condition you won't use anymore into donate, things belonging elsewhere in "wrong place" (to put in right place when done), and return is things to go back in the drawer when it's cleaned. Everything from the drawer goes into one of those (in some cases, you may need a "mend" box - but only things you know you will mend and not things that you could when you have time in 15 years...).
And work in small blocks of time - 5, 10, 15 or 20 minutes. If you say to yourself "I have 15 minutes" rather than all afternoon stretching in front of you, you can get a lot done by focussing on 1 or 2 key things, and do another couple of things tomorrow.
Work on a room for a week, make it better, then move on to a different room. If you finish one faster than expected, take a few extra blocks of time back in areas you didn't finish or agreed of time in rooms you know will take a lot of work - but keep moving through the house to see improvements generally.
Donate goes out into boot of car, to drop off when passing a charity shop, not a different corner to fester.
I use the HGP as a template but in all my years of doing it, I have never completely finished it (I have only rarely "completely" finished any individual rooms, and those have only been 2 specific rooms a few times that are easier. But I know that I try to do some things to make a difference all around the house in rotation and it is always cleaner (and a bit less cluttered) when I am done.