I never really get too upset by bad figures. I try to work out what caused them and try to stop it from happening again next time.
For example, I woke up at 9.9 this morning. Not great, but not the end of the world. Rather than giving myself a kicking, I just thought back to the night before and two vast helpings of trifle I scoffed down (oh, I love trifle!) round at my in-laws. Last time I had trifle I was up in the 20s for hours!