Try monitoring your moods for awhile and get a baseline for what your moods actually are.

This suggestion needs to be more specific. Otherwise, people will just say, "well, when I thought about my mood over the past week, it wasn't so great," or "I already know what my mood is like."

I found this app more-or-less at random. It has the advantage that the source code is on github so you can customize it to meet your specific needs.

Also, this article needs some citations. Like, any.