Actually it can be a thing of decision, if a gambler decides to stop, it would literally be very difficult for him, it's just a matter of time and determination. The gambler should see it as a thing that's not beneficial. As time goes on that gambler tries to forget about it and also trying to concentrate on other important things that would be more beneficial. Gradually he/she would forget and move on.
It is possible for it to be a thing of the past