You can win in gambling is you know when to stop. You need first to set your goals. How much profit are you looking into and do you have funds to start with. Once you reached your goal, walk away. You also need to set a stop loss, its your protection against sudden change of trend and price goes down again.
Right, if you can stop after losing, or if you can set up a limit before a game, you can win in gambling.
This could be the ideal situation if people can restrict them self to certain limit and do not go beyond that as it can lead to heavy losses if people continue gambling or do not put a control. Thus this people might get addicted sooner or later .