I like leaving myself notes in which I call myself demeaning things, such as "filthmongrel" and "ass" and "hobag." This is not because of some self-esteem problem, but simply just because I find it entertaining to wake up to a sticky note that says "do laundry, hobag."
I leave myself a lot of sticky notes, both corporeal notes and the virtual notes on my computer desktop. Without them, I can't remember anything. (I have not yet taken to carrying around a Polaroid camera and writing notes on each photo, though I assume that it will come to that someday.) Of course, I'm sure relying on a billion notes as a crutch isn't helping my memory get better, if it's possible for one's memory to get stronger by relying on it more.