theuncertainty has some GREAT ideas. Lists, lists, more lists.
Break things down into manageable pieces. Keep a legal-stuff list, a daily to-do list. Scan it once in awhile, as you take care of things, cross them off. The progress will be encouraging. When things pop into your head, write those down, too. You can figure out where they go later.
It will all get done, it only SEEMS overwhelming when you let your thoughts whirl around in your head. The virtue of the lists is that once something is on there, you can forget about it until you are ready to work on it or review it.