I am an . I feed off crossing the line with friends. Ive been doing it my whole life. How do I stop?

It started when I was young, mainly learning from my father, he was a big joker/prankster/funnyman. However, over the years my laughter was brought on by the adversity of others. I wasnt a bully or anything, just an hole. Always had tons of friends, but was just an to them. Then when I got to high school it got competative. Now Im competing to be the bigger hole in an even larger group of . Soon college came around it became even worse. By that time I was loosing friends as fast I as I could gain them. I felt invincible for no matter who or what I put down, I was going nowhere but up. Now things arent so great in life, im kind of in a slump, so.....what is my first instinct....keep it going, keep pressing ons, show em that you dont care and never will. You are an and proud of it. Today I pushed the 3rd woman of 2009 out of my life completely, I found a great opprotunity to opt of ever talking to her again when she made a comment that could have been construed as rude...so what I played it off as if I was deeply offended, and what did I do....I was my normal self....get a lil crazy, go for the jugular, say the worst possible things and keep it going till she is convinced you are not the same person she met before. Why do I do this? Ive done it with every woman in life, even close non-ual girlfriends, guy friends, acquiatances, so on and so forth. I cant seem to stop. Its like there are deepy routed problems below the surface of my holalism. HELP ME and please no religious crap I went to Catholic School for 12yrs and I dont need anymore Chesters telling me how to live.