The first reality is that a gambling addict never realizes that is he sick, only when he has hit bottom, that bottom is intrinsic to the person, individual and only detected by third parties.
Now, for those of us who are "healthy" it is even good to have certain rules to follow to avoid falling into dependence on the game and ending up in addiction mode, the first one I would recommend is that you stay away from a casino for a long time months and if You can years. If you can do it you're a healthy guy.
The best thing that can be done and by the way there are several threads here in the forum that deal with this topic, is not to be such a lonely wolf, you should always be in contact with another person in the real world who knows about your hobby, entertainment or someone knows what you like to gamble, this person can realize your bad habits, which for you can be normal.