Quit date depression.

Once again I have set a quit date to stop smoking. Tuesday, November 18th. As usual, two days before the event, I am going through a deep , suicidal depression. My mind, in advance, just locks on to every negative. It as if I am playing a game with the assorted demons inside my head and losing. Getting my rear end kicked, in fact. Someday, when I've actually quit, if such a day ever arrives, I won't have to go through this anymore.