As we get older, we used to be more responsible as we needed to handle more things. During the young age, even if we have commitments, it doesn't look like a big thing. After years, even a small commitment looks like a big thing, and we start the plan for the execution much earlier, and we feel like a great achievement when the same gets accomplished. During our young age, the same could've been done on the go, and we could've never minded it being a big thing. At some point, being selfish is a must. If not, this is going to be difficult to survive in the fast-moving world.
He must change his minds when he becomes old and could be wise than before. He should think that he is enough to playing gambling and now is the time to stop gambling and enjoy his time. He needs to think how he can use his spare time and not feels boring if he don't have much activities and not trying to visit casino to playing gambling.
If he can think what he can do in his ages, he will see that gambling is not for him anymore especially if he played gambling in his young age.