When I was the most depressed, I drew or wrote poetry. The second my mood would switch to happy again, I'd throw the stuff away. I almost wish I had kept the stuff so I could see me at my lowest points. I do remember writing a story with a friend and writing over and over again 'I don't want to be here', 'I don't want to go home' or 'I want to be somewhere else'. I was just very unhappy with life. I remember more than I should really. I keep saying one of these days I'll write a book, but I'd have to put it under a pen name. I don't want people to look at me and know my past. I've suffered, but everyone does.
Drawing and writing are amazing ways to release some of that pent up sadness that always comes with depression. Try to keep your art (both drawings and poetry) for as long as you can. I have folders that I put mine it, maybe that would be a good idea for you. Sometimes our most beautiful pieces are made when we are depressed. Please try remember that it can always get better.