You're the only one who can help yourself if you become addicted to gambling. We can provide advice like find something else to spend your time so you forget gambling or think that gambling is not good for you at all so you must avoid gambling. Even though there are thousand of people that tell you to stop gambling but you continue to play, other people's advice are all non-sense. Help yourself in your own natural ways by pushing yourself to stop gambling.
We are just human and we need the help of others during this difficult time so don't hesitate to ask for some help from your friends and your family, I believe those are the people that is very close to you can help you out of that gambling addiction. You can also make yourself busy to Church activities, I'm sure God will also help you, you just need to seek for his help. Anyway, most of the gambling site have already a supported site for the gambling addiction, there's a responsible gambling if you need a professional help, you can go to them.
I have heard and even seen shows on television about phobia to animals or other types that can be cured through suggestion, whether it is real or not. Maybe a way of giving suggestions can also be done to gambling addicts so they can leave the habit, but this is done if you are 100% sure you want to stop gambling.