Based on what I have witnessed in some compulsive gamblers, they usually see some of all these signs when they are gambling but they ignore it and don't bother to make a correction, they keep ignoring it until they can no longer control it because it has become a habit. At least if a gambler begins to notice all this symptoms, they should either take a brake from gambling for some time or seek a advice from someone that can help them.
Gambling addicts are denial. Even if we clearly see them struggling to control their addiction, still they would defend theirselves that they are not addicts, but are only gambling just to entertain theirselves. And when they can’t no longer control their addiction anymore, after they have ruined their lives and break their personal relationships, that’s when the time that they will admit to theirselves that they’re completely helpless and hopeless. And even wish to have their support system, their family, to be always around them.