Personal willpower is crucial to resisting gambling. The psychological appeal of gambling must also be considered. We could also promote self-regulation and mindfulness in our culture. Could community support groups or gambling psychology education be helpful? A community that encourages self-awareness and responsible gambling may help us address this issue on a personal and societal level
Personal willpower alone will not stop gambling. You need support from therapists, or support groups as it will help in developing accountability and addressing underlying issues. Will power alone will only give a brief solution to gambling. I know that gambling websites have a portion where write about getting help with gambling addiction. They are very helpful can connect gambling addicts to communities and the help resources they need.
You can't underestimate the power of Willpower, maybe it's something else you are referring to but if it is true Willpower, then it's enough to set any addicts free without any therapists, psychiatrists or other similar experts. This is what is helping me at all times and I experienced it at the time when I was addicted many years ago. The thing is that I have a very strong mind, and that is the spirit, and if you can have that Willpower to say "No" to it and you are determined for even just a few days, that might be how you might have gotten healed forever. Except that people remain in their condition and believe they must see experts simply because they do not have the Will to say enough is enough.
But the truth is that Willpower is in categories, and to some, it's very weak, to some moderate, to others strong. This is why you can't judge Willpower entirely because it might be weak in some people and when it's weak, we can't still call it Willpower but Weakwill as the mind of the person would still be dragged by both addiction to gambling and the Willpower, and eventually the gambling might still win. But if someone has that strong Willpower and uses it to fight gambling, such a person doesn't need anyone else as it's a personal determination and will not return to his vomit any longer.
Addiction could be tough but the solution is little as long as the person is really Willing to set himself free.