I definitely need to do some decluttering, no doubt about it. When my husband was alive, he was very much a "thrower out" person, and would be the first one to suggest sorting some drawer or cupboard. We ended up with a workable system, where he would go through something, and leave a tray or pile for me to check over before it went. That way I saved odd little bits such as spare bits for vacuum or whatever , but mostly was fine about things going, as long as I had checked it out.
On my own , I was less likely to make an effort, but given a miserable day, did manage a fair bit, and of course it was a hard time leaving a 3 bedroomed house and large garden for the flat. However now I seem to be in the situation where I see things needing to be done, but physically not up to doing much. Alternatively, I make an effort, like the other day and get rid of quite a lot of books etc which were very well received from the local hospice shop, so I am pleased and yet within a couple of days had some hassle with a tv and now feel it is back to being a mess again. Well it will probably carry on like this until September, which as a start of the school year, and maybe a bit cooler I might be galvanised into trying again.!