Counselor. Get a counselor that specialzes in this particular addiction to help you with coping strategies.
Gamblers Anonymous. Is one option. It is a 12-step program for those with gambling problems, and it can be very helpful for some people (www. Gamblersanonymous. Org/). I would strongly recommend seeing a physician trained in addiction medicine or psychiatry (www. Asam. Org, www. Aaap. Org) who can recommend a program in your area. Congrats on the decision, now the hard work begins.