i think maybe you are under stress. sounds to me like you have had a hard year and alot of things have happened to you to make you feel this way.
sometimes when things are going sour you really have to just close your eyes and stop thinking.
the brain is the most powerful thing and can cause you to get stressed out and such. you need to take some time for your self and relax
sit back and anylize your life and what it is and whsat its becomming.
look at the good things happening and try to focus on one or two goals you have for yourself that you would like to obtain.
life is tough and things suck sometimes but as long as you trealize it wont be this way forever then things will be fine!
i recommend a great movie that may help you see what im trying to explain
its called elizabethtown and its literally a miracle worker.
and remeber "No true fiasco ever began as a quest for mere adequacy. A motto of the British Special Air Force is: 'Those who risk, win.' A single green vine shoot is able to grow through cement. The Pacific Northwestern salmon beats itself bloody on it's quest to travel hundreds of miles upstream against the current, with a single purpose, sex of course, but also... life"