Best thing to do is to search for another hobby that is going to keep you busy but will cost less money than gambling . If you are able to do that then I am sure that you are going to be able to quit with in not time...
Any hobby wold help you as long as it is not related to gambling, that is the way to stay away and since we have unique interest but I would recommend that for someone to quit of stay away in gambling, he should focus on sports and productive activities in life.