ghostieboo, I am not medically trained and I can not give you medical advice.
But this might work. It worked when long time ago I had a depressions.
Use your imagination to fake a better situation.
One of the very cool things about the human mind is that you if you fake it long enough then your subconscious will start to believe it as true. It is a slow process but over time you suddenly realize that the depression has been gone for a very log time and you never realized it. I cannot guarantee that it works but it helped with me. Fake it until you make it.
The trick is the reverse of how you get caught in the 2012 hoax. By thinking it is possible that the world would end, you faked an imagination and your subconscious started to act on it. The more you watched the 2012 clips, the more you created a fake story and the more your subconscious started to believe that it is true.
The other thing that worked for me to get out of the depression was nit to fight it. The more you resists it the more you waste your energy and the harder it gets to get out. It is all about the timing. When you are in the downward spiral, just relax let it happen and save energy for the moment you are going up again.
However here is the tricky part. When you go up you will exceed your normal level and feel very exiting and ready to change the world. Try to resist that, start resting and try to lower that excitement. It is this very high wonderful feeling that you can beat the world that absorbs too much energy and it forces a downhill again.
The trick is to start to balance the high and low levels and make them as flat as possible.
It is a bit like running a marathon, conserve energy when you feel too much energy and slow down when you feel tired. Try to have an as flat as possible run over the complete 42 km.