Similar to Sorrelhorse's, my family is famous for depression and addiction. Every member of both my maternal and paternal family have experienced at least mild depression and both my mom and dad (and most of my other adult kin) are recovering alcoholics.
I've been depressed before. It's not what most people think. You can't just stop
and go back to normal. It's a recovery process. Horses have me something to look forwards to. I was anxious to the point of not sleeping at night. While I was riding, horses miraculously allowed me to forget about everything and focus on them. I'm not sure what it is about them, but I'm glad they helped me so greatly.