I feel lost.

I was diagnosed with depression on July first, 2016 and I did deal with it for a long time before. I am really alone and I don't know what to do. I just don't want to deal with the things in my head. I have been clean for a total of one day, and I can't even really last that long. I don't want to be here, and there is not much of keeping me here. Those things keeping me here are not even big and I do not understand why they are keeping me here, but they are.