How do you get over a brain dead situation?

I use to put some serious work hours in and i'll be ok.....but now, woooo......well, put it this way I did about half what I wanted to do today before my brain checked out 4 the day.....a break didn't help....I just felt lazier....mmmm any suggestions...oh timetable or schedules never work with me.....thanks 4 the brainstorming :)