I'm sort of a messy person and I'm naturally unorganized.  I'm working little by little on changing that.  My life is a little hectic with work and my personal projects and unless I write things down and make lists I will get absolutely nothing done.  If I have everything planned out in writing then I know exactly what I need to get done and how much time I can afford to do nothing, and I really like doing nothing.  I have designed a few different styles of planner trying to find one that works for me best.