So I'm taking a very technical course right now that requires me to go out of my way to study things that I don't find particularly interesting.. When I'm on my low days it doesn't really happen and I just end up laying around and going to sleep early. I try to exercise but the same thing happens, when I don't feel motivated to do something I can't seem to pull through and do it. In my defense I work 7 days a week so I should feel a bit exhausted, but I would like to be able to work on some personal goals.
Does anyone have any strategies/tips for staying on track and not getting back into a negative cycle? Like keeping a journal I heard could help; but again, I kept forgetting to do it

. It would be nice to get into a routine and maintain it.