I can no longer control my thoughts. Whats wrong with me?

For a while now i have been afflicted with a number of things i have no logical way of explaining why they occur. Up to now I have been able to deal with them for the most part but lately things have become worse to the point that i can no longer stand it any more. My thoughts have become so chaotic and disordered that the words in my mind no longer make sense. I can no longer control my thoughts in the way that I used to and sometimes it actually comes out in my speech as random incoherent jumble of words. It feels as though I'm being controlled by a robot, and no matter what i do I can ever escape this chaos in my mind. Occasionally, these thoughts take on the voices and personas of different people and sometimes i find it difficult distinguishing them from the voices of real people. I often get the eery feeling that my thoughts are being broadcast telepathically to everyone else. I know its not logical but I cant explain why this is happening to begin with. I try to to ignore it, but its starting to interfere with my life and cant enjoy or do anything without fear of getting caught up in conversations with myself or being lost in my own thoughts. It feels as though Im drifting further away from reality. For the moment i get by but it takes a lot of concentration and i find it very stressful. It took me a lot of effort just to write this. I also find it hard to sense the page of time and remember things anymore. I never talked to anyone about this and getting harder to hide this from other people. Otherwise I am very sucessful person with a good life and close family & friends, so I can't quite figure whats wrong with me. I'm getting to the point where I can no longer tolerate the chaos in my mind. Anyone know whats wrong with me?