I have a friend. He's very depressed, his mental state is deteriorating every minutr and i'm scared. He talks about it but he doesn't know what to feel at all. He keeps asking, "why", "i'm not being productive but i don't know how or where to begin"l, "man, i'm a total failure", and it saddens me. I am always there for him but I can only listen. He knows his shortcomings but can't find any purpose. Please help me help him. I love him, platonically, very much. Thank you.