If you want quit addiction from something then you may need to change your life style and concentrate on long term pleasure like building your career or doing workouts and getting success in your business like that.
I agree with this but before doing it, its better if you consult to a psychiatrist first because he/she can give you tips and advice unto how you can remove your addiction. Change your lifestyle, find companions that are not like you who are gambling. Try to focus on one goal like make a business or get a decent job or travel around the world or do blogging. Anything that is not related to gambling.
That is not necessary, you have your family to help you, you are only getting the service outside if the addiction is really serious.
Most of us are addicted in gambling but it's not serious because we still can get out even on our own, if we got addicted we need to seek help from our friends and family members, they can give more honest advise than a paid professional, I'm not saying they are not effective but I guess people close to you would do better as they know your better.