True, it's hard to recognize mental illness and sometimes, the people around are the one who notices it first.
Gambling addiction is the most common addiction after drugs, they should take it seriously before it happens to themselves.
It is not so easy for find it for themselves as they are already addicted to it until they find themselves in a situation where they have gone too far losing everything and even if winning, they could not stop due to their inability to control their minds. I hope that some day, people will start recognizing themselves and if they find themselves under a 'gambler's' category, they will take necessary steps to remain under controlled mindset and not to get addicted to it and cut their connections with almost everyone in their life.