I've been tracking my moods for more than a year and a half. In the begining I would make an entry in my journal whenever I felt a noteworthy episode had occured. Didn't do me much good. When I reviewed my entries I found way too many gaps, could remember the situation or why I was feeling the way I had, and most importantly still not understanding me and my moods.

I try to make it a point to track my moods everyday around bed time but I also find it to be helpfull to just spend time reviewing and reflecting on what I've tracked. Also it's not uncommon for me to make several entries on days when I'm really having a hard time.

For me tracking my moods is understanding me and understanding me is a full time activity.