Long story short, if a gambler still maintains control over their gambling habits there is a big chance that they can distancing from it, but if they lose control over themselves it becomes significantly harder to do so imo.
The matter is always the control, control of emotions, and how it goes with regard to gambling activity. If we can't control it anymore, we can't also control ourselves on how we're going to quit. But if you've got an inch of control over everything, quitting is easy. You know your priorities and you're all set to gamble a few times then go back without any emotional attachment to it. There are gamblers that are like that, they're coming for fun and setting boundaries, and if they wanna quit because they've got too many things to do then they'll do it.