Yeah , back then I thought I knew everything about gambling but now that I totally understand the importance of professionals I kept telling my Addicted Cousin to try consulting or seeking Help from a clinic.
though up to now he kept denying yet I will not stop to ask Him and help him get through this problem.
If he's still in denial, maybe he thought and consider his gambling activity as normal. Sometimes if you are already in such stage, you won't notice that since you're blinded and tend to ignore others.
Anyway, he needs to have a will to change what he used to. Because no matter how hard you advice your cousin to seek for professional help, that's going to be futile if he don't cooperate.