For me it depends on what makes it a "bad" day. If it is a problem with subject matter--put it aside to handle first thing in the morning behind a closed door w/ a fresh hot cup of coffee. If it is a personality issue, that depends on whether it is our opposites at FEMA or the State, some individual in the client's organization, or God forbid, an issue w/in the our organization. Personality issues generally just take some time doing whatever, and try to get back to the place where I can focus on the goal, and put it all is perspective. Goal trumps personality everytime, and how I get there varies with what's available, walks, Boob Tube, book, whatever.