I've been keeping a mood journal since at least 2007. Enter everything from what I did and how I felt to med changes and hours of sleep. The problem is, I don't ever read back over them. There is too much information. Perhaps someday I'll get back to it. As for charts, I take the depression and mania test on PC here every night and I enter the numbers into an Excel spreadsheet where I have a chart that tracks my highs and lows. It's been very helpful in getting an overall picture of my episodes.