I lie constantly for attention. What's wrong with me and what can I do to stop?

[Rummy.. Chalk.]

I've always been a bloody liar, for as long as I can remember and it gets completely out of hand. I've lied about everything, absolutely everything you could think of. Abuse, pregnancies, my name, who my parents are, rape, marital status... It's like they just come out. I like the attention and I want to add something to the conversation to make me stand out and put the focus on me. I feel like a freak and a sociopath, just without the murdering end. I feel like I'm sick. What's wrong with me? And do you have any suggestions for me about what I could do to stop bloody lying because it's pretty well making me depressed and miserable.

I've already tried therapy many times. I just lied to the therapist so it was a severe waste of time and cash.