I don't know if this would work with other disorders but for me, every time I start an activity, I try to make sure I won't mind too much if I have to stop and rest often or maybe even abandon the project entirely until the next day--or the next, depending on how I'm doing.

This goes for ironing, vacuuming, or any project like cleaning the refrigerator or cabinets. But it also goes for activities that are recreational, like gardening. My "gardening" involves a few potted plants on a patio that are kept high enough for me to get at them, and a few more potted plants indoors, but just repotting one or two of them can be tiring. I'd need a couple of breaks before finishing.