different people have different ways of charting their mood that works for them. It's useful to track *how* high or *how* low your mood is getting, rather than just good or bad. I use 0 for baseline/normal, and 1 to 3 for different levels of hypo/mania, and -1 to -3 for levels of depression. I track twice a day so I can track when I'm high and when I'm low to bring to my doctor.