Hi Kimberley! :)
I can definitely relate to what you've said. Clutter really effects me too, but somehow I manage to convince myself that it's simply a better housekeeping issue (rather than an actual clutter issue) - which is soooo wrong of me!
It is commendable that you've chosen to move in with and look after your grandmother.
I have Fibromyalgia and it's been a long struggle playing a balancing act of having good days to clean and then during the bad ones-- I have no choice but to rest. I have OCD too and so that makes things worse! And then there's that voice-- you know the one-- the one that sounds like Mom telling you that you should be more clean, neat, etc? Yeah, I try VERY hard to ignore that voice and do what I can. Getting rid of what I don't need is the best option for me because it's really impossible to keep up. The floors are wall-to-wall carpeting and I tend to vacuum EVERY textile in the room as close to daily as I can. I vacuum a lot because of the cats and dog. So it's a huge task that doesn't get done as much as I like.:) I'd much rather put the knick knacks in the attic and get rid of any extra dollies so I have less to think about. Having said that, I am guilty of having a lot of kitchen gadgets due to my illness. I do use them because I cook a lot, but I SURE WISH I didn't have to! It's a very tedious task to put everything away when I'm done and sometimes it doesn't get put back right away. I'm VERY GUILTY of clutter in the kitchen!