You may find that there is a non smoking YOU buried in the back of our mind.
Try to associate yourself with this version of you. The more you think of yourself as a non smoker, the more you'll be detached from the addiction.
Rather than being a person who is 'giving up' or 'quitting' try to see yourself as having evolved into a slightly different you. ( Actually the you that you used to be )
What have you got to lose ? If my experience is anything to go by, you'll spend a lot of time thinking you're losing your mind anyway so might as well have a clear out.