Every time you enter a room in your home, for whatever reason, ALWAYS leave it better in some way than when you entered it. It might be as small a thing as shutting a closet door, fluffing a cushion or taking an empty coffee mug out with you, but make it a fun challenge and a habit.
Those little improvements add up in a day, and they take up minimal time, because they happen as you go about doing your everyday activities.