True. Whatever you make the priority will consume your time. There’s a great line I read decades ago, “The job will expand to fill the available time.”
So the tool to handle this is a block timetable where you assign blocks of time in your day and week for the tasks to which you need to or wish to allocate your time.
If you block out time for the necessities and the desirables then you are more at cause over your schedule and life.
Of course there are nearly always unforeseens that come up (like the dog peeing or pooping where he shouldn’t) and need to be handled which is why some slack to handle them is built into a well structured schedule.