I think this is something that happens to everyone at some point, whether you have a chronic illness or not, when you don’t have a schedule or things you have to do with certain time scales it’s easy to lose focus. I always find I work best with deadlines, whatever it is, even things that aren’t work, like shopping, I find that if I don’t have a focus, something to aim for, I get a bit distracted and can end up coming home with things I don’t need or didn’t plan on getting.
Since having ME most of the time I’ve had some sort of goal, some time scale to aim for. Until this time last year I was pretty much in some form of education or other for most of the time and the breaks between were a few months and pretty much planned in there to have an aimless few months and recover energy and have some kind of social life (not that it was all that successful on the second part most of the time but oh well). Since finishing the degree and now having nothing to aim for I have found my focus disappearing at times. I didn’t even really notice it until recently.