You could try Suicide Machine. They essentially do what you just described (Delete all your friends, and posts, etc. Also, that removes the temptation/ or mean

You could try Suicide Machine. They essentially do what you just described (Delete all your friends, and posts, etc. Also, that removes the temptation/ or means to go back to your old profile for which you will manually have to re-add all your friends. http://suicidemachine.org/ http://suicidemachine.org/