I think it helps many of us, to be somewhat organized and to have some focus, with recording things, as you said.
If that way with a daily planner, has a positive effect, then continue with it.
If not, then try a different method, to give as much structure as is helpful. Each of us as individuals, might find a different amount of structure, to be positive.
Such as, perhaps do certain routine, for a specific part of the day, each day, and leave some other parts of the day open, then. Or list a few options, for yourself.