Anger, mood swings. From my problem.

I am suffering from pcos and breast cyst problem. I am on medication since last 2 years. I have a problem that i frequently have mood swings nothing seems good to me. I get angry on small small things very frequently since my childhood. One thing I also want to tell that i dont have any support from my parents side. Things are so difficult with me that i even don't want to live with them. I am also having sleeping disorder. I get irritated very frequently on such small things. And in my mind there is always one negative thought going on. I imagine things a lot. I have a lot of negativity surround me. I do things though i know it very well that what i am doing is not right. I don't have any control on my mind. Please recommend me some therapy or some exercise so that i can overcome from my problem.