I can't disagree with you. And in this desire to change, the support of loved ones is of great importance. From personal experience, I will claim that coping with such difficulties alone is almost impossible. The firmness of intentions and support of family or friends are the main components that will help the addict to heal.
Following to that sentiment, if your love ones really care about your problem the full support will help you to cope up, gambling addiction might be developed alone but resolving or recovering from this kind of issue will take a long road if there's none who will help you. In terms of changing the environment with the help of your love ones will allow you to clean some air inside your polluted minds.
With new sets of daily activities and with alternatives lifestyle, eventually the urge of gambling will be removed inside your system and from that you will be busy with other things and will allow you to complete free up yourself with gambling addictions.