Boy I hear you. I work nights and it can be hard to fit quilting time in too. Sometimes I set a clock for 2 or 3 hrs and do housework or whatever needs to be done then I give myself an hour (ha ha) of me time.I think being creative and letting yourself ,helps you feel rejuvinated and better able to handle the day to day "stuff." I also have the luxury of having an understanding family-they don't complain about the ironing board being a piece of living room furniture! I also don't have little ones at home anymore (boo hoo)
so that helps.
Maybe you could find quick projects for that instant gratification.
Don't feel guilty about taking time for yourself, you count too and creating makes you feel better.