What would happen if you turned your to-do list into a story as a rehearsal for the next day? Personally, it's helped me not just Get Things Done, but also boosted my memory so that I've been able to ditch complicated to-do lists and schedules for good.
Most of us think of adult play as respite or indulgence, but having fun is no trivial pursuit. In fact, it's crucial to put mental creativity, health and happiness.