What is wrong with me?

I'm not the friendliest person, not any longer anyway. Right now my life is a cold veneer of dispassion, which covers up nothing more than numbness. There's just been so many disappointments in life that I just don't care much about anything anymore. I doubt I could even if I wanted to. I wish I could go back to the way I used to be but there's nothing left to do that with. I still have a little bit of feeling left, but when I feel anything at all I am somehow distanced from it in one way or another. I've closed myself off from people almost altogether and I've succeeded in pushing any friends I had away. I know there's people with a lot worse problems with others, but still, I can't change the way I am now. I don't really know what's wrong with me. I've been to a few therapists and they didn't help any. They just sit there and listen, and you pay them to do it. I'm not suicidal or anything but I'm also not really living in a sense, just going through the motions and surviving at best.