From despare to anger

For a few weeks now I have been sinking deeper and deeper into depresion. A couple days ago I decided I should try to reach out. That did not go well. It was sort of like standing on a ledge of a tall building and and screaming, "I'm here on the edge. Anyone want to put up a net? No? Anyone want to listen? No? Alrighty then"
A few hours ago this feeling of despare turned to anger. I've been working on a few story that I might publish in a book and decided I did not want to work on them any more because why bother? Why should I leave the world anything when it has just kicked me aside like dirty underwear? I've decided I am done with everything and every body until...I don't know when. I am not going to be giving any more of myself to this world. It's just not worth it.