I'm a list maker. I make lists for every little thing. Daily To Do lists, Weekly To Do lists, Monthly... you get the idea. I keep all my To Do lists handwritten in a cute little fat spiral notebook. Which is slightly more than half full and will need replacing soon.
Along with all the to do's, there are other lists: the To Be Read list, the shopping list, the list of meals for the week (aka: the weekly meal plan). I keep 3 (count 'em - 3!) separate calendars to list all the various activities and events our family needs or wants to attend. It goes on and on. And occasionally I like to make a list of all my lists.
I like lists because they keep me organized. They prevent the inevitable "oh, I forgot (to do, to pick up, what I wanted to get at the library, etc, etc, etc) which comes with a forgetful nature.
The best part of the To Do list though is crossing off items. Looking back at all the to do's which have become DONES. It gives me a sense of accomplishment. A visible, tangible proof of what I have achieved in any given time period.