At the end of each day, work out exactly what you need to do next, and then...

...don't do it. Seriously. Make a note of it, save it, then walk away. Then you know *exactly* what you're getting started with the next day, and by the time you've done that you're in the swing of things. (Especially helpful if you're not a morning person like me. Much, much easier to get started if you know exactly what you're doing.)