I love your Listnerds emails I always upvote them. What if I have a planner? Well, normally I don't plan the day to day but I do write down the things I have to do on my mobile, it's that I have a fish memory.
But if something important has to be done, then I do plan in detail and analyze the result as well.
Fish memory. I can understand. I have to plan an document because with doing so, it's hard for me to keep on track after my head injury. I wish I'd had this habit before all of that happened. :D