A professional gambler will always try to control himself because they can do it and has learned much about it. But it is not easy to become a professional because there are many things that we have to learn before we can become professional gamblers. The key to not becoming addicted is always to control ourselves. Even if you are a beginner but have that ability, you don't have to worry about becoming addicted to gambling.
Someone that has played gambling from childhood to adulthood and became a professional gambler in the gambling field would not be an easy thing for that person to control his motion (feeling) to gambling because he has taken gambling as a means of earning a living so you will see that person in the gambling hall every time. Those guys have taken gambling as their daily work or offices. They stay there to argue to disagree to agree.
If we had other things to do, I don't think we would think about gambling in our spare time because we would want to try to do other things that are not related to gambling. And yes, I agree we should change our mindset so we don't think about gambling because it will make us more curious. Perhaps going on vacation when we have free time can relieve or anticipate the thought of gambling.
From the part I bolded, all depends on the country, if the country does not value the teaming youths then they dont have any other option than to gamble. Example. In my country I have heard youths saying that the recent bet halls or companies established by different agencies from gambling industries have created job for them. Some of these boys enter these bet halls in the morning and returned back in the evening. They stay there to play bets argue watch footballs. Since there is no government work to do. In my country there is no industries but there services and service do not employ the youths.