From the definition you gave about gambling, don't you think is wrong for one to be addicted to gambling to the extent of losing to it, they still stick to it with the urge to gamble for more. Nobody would experience loss in gambling and they perceived their encounter with gambling as a good one, not the wrong one.

Set aside a small amount each time you want to gamble and don't be carried away by gambling winnings or losses that would make you think, you should recover your losses before quitting gambling for the day. That step alone can lead to many loses