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Many gamblers have said this same thing in the past but all of a sudden they later came back to resume gambling and funny enough this time around was something else. However if you want to stop something for ever you need to mean it because coming back to it shows how weak the person is. Although it takes discipline to stop gambling mostly if it has to do addiction.
If you're serious about quitting gambling, you must be prepared to leave the environment where you're surrounded by friends who gamble. You won't be able to quit gambling if you stay in the same circle - but once you do leave, the new environment will help you forget about gambling. Finding new activities and circles that aren't affected by gambling can help you forget about gambling - but some gamblers don't want to do this so they potentially become more addicted than before.