I think there's a lot of us that have suffered through depression, I know I've been very intimate with the bitch. If you're anything like me, you've had a hell of a time expressing your state of being to those around you. Here's a blog post I found that perfectly describes my situation in goofy stick figue art:

http://hyperboleandahalf.blogspot.ca/2013/05/depression-part-two.html

-Tyler