Hi everyone, I have often been interested in this topic for some time and found this article by Stanton Peele useful so I thought I'd post a link here.
http://www.peele.net/lib/personality.html I found the conclusion particularly encouraging :
"In this sense, then, the idea of an indelible alcoholic personality — the belief that a leopard can never change its spots — can actually contribute to or create alcoholism. That is, believing that one has a personality that means he or she can never hope to control his or her drinking can be a self-fulfilling prophecy. Trying to persuade people that they have such a personality can literally do more harm than good. After all, some people who appear completely out of control of their actions at one point significantly change their outlooks and ability to regulate their behavior later in life."
Warrenjames