I just identify some symptoms which are considered as the characteristics of a addicted gambler. First of all those who are gambling constantly and planning new strategy to gamble more. Some gambler try to keep more amount on gambling. A few addicted gamblers try to give up gambling because they think they have lost more and also some addicted gambler try to regain his money which are lost. Finally, gamblers who have already give up his regular duty or work. I think those are main characteristics of addicted gamblers.
I believe one should not be greedy at all. The greed and lust for money brings a person into strange situation.
The mind is always looking for opportunity to gain money and that is where one fails - at the end we all are dust - and to the dust we return.