Its hard when you feel stuck. Sometimes it is a case of "just do it". Break the tasks down. Maybe you you can find some money to get the cleaner in to do the floors and bathroom each week.

I do tasks until I feel tired and then rest. Then when my back is okay again again I pick another small task. I cleaned my shower last week over three separate times. The job did get done.

"and it's far too bad to allow anyone in to help me" Is a part inside that is telling you that it has gone too far. Please help yourself by getting help.