Try having a withdrawal therapy like the ones who undergo drugs. Minimize your gambling activities little by little until your urge to gamble is gone.
This is is possible if you haven't staked your properties into gambling... or if you only got busted a few times, but if you were busted big time, then it will be harder, EXCEPT, if you could accept that you fail in gambling..
That gambler needs a sponsor to get his staked properties to get back if he cannot moved by it. If I am in this state, I will probably gambling right now to get what I lost.