Unfortunately it seems the best approach is therapy and meds. We don't have a lot of tools which makes me very frustrated.

The most often recommended is-
Meditation
Diet
Exercise

Of course when I am severely depressed there is no way I am going to exercise and my appetite is all over the place.

I would strongly recommend meditation. It has helped me a great deal but it has not cured my depression. I don't think there is a cure. It has helped me become much more aware of what is going on with me at any given time.

I would strongly recommend journaling. Keep a journal each day of what you are feeling, thinking, what is going on in your life, anxieties etc etc...it really helps me. Some mornings I can't wait to get on my computer and just get it all out in writing.

This site has been a tremendous help to me.