I think Flylady could be of help to you if you go into it with the knowledge that you'll be do what you can, and not sweat the rest. She gives little daily "missions" that take 5 - 15 minutes each, under the premise that "you can do anything for 15 minutes".
Some days I get to the missions, and some days I don't. Flylady says that "housework done imperfectly still blesses your family", and I like that sentiment. It helps me past my perfectionist nature that makes me reluctant to do anything if I can't do it completely or perfectly. The system is about reducing your stress by managing your home in small bites. I think it could be helpful to you.