Depression

Depression is where (excuse my French) you don't really give a fuck about anything anymore.  Depression is where you cannot even release yourself through your release, whether it be writing, painting, running, fixing things, dancing, driving, playing an instrument, etc.
Depression is when you don't really feel like doing much of anything, although you don't want to be alone. 
Depression is where you can sit alone for hours just thinking about how much your life sucks in a silent atmosphere.
Depression is where you don't feel as though dying would be a horrible thing.
Depression is where every single food put in front of your face seems unappetizing.
Depression is where, even though you feel as though you're  at rock bottom, you just keep sinking further into the black abyss.

Creep - Radiohead