I am totally disorganized and I do need to write down a to-do-list, in order of importance but also as important is that the list needs to be 'completable' (if there is such a word) in a day's time. That way I'll be able to see light at the end of the tunnel everyday and get the feeling of accomplishment. I remember reading an email from Mike Dillard, who also mentioned this.
Secondly, I also need to be able to say "No, I have to work". I do get side-tracked too often.