Good one Doug,Depression takes all forms. There's so many myths surrounding Depression,if you have it you'll know that is true. For one people who suffer from it aren't constantly down and suicidal,and telling someone with the disease to "pull yourself together" isn't a good plan.
Not a good theme to deal with but you turned it into a sensitive song.

We are all in the gutter, but some of us are looking at the stars. Oscar Wilde