He thinks that he can change the stories to be better. So he decided to return to gambling and hoped this time, he would win much money. That makes sense if he goes back to gambling but he must realize that he can become even more addicted than before.

As a friend, you can help him change his life and set him free from his gambling addiction. He can cure his gambling addiction so he should remember what he needs to do. With you beside him, that will give him support in releasing his addiction.

He should thinks about whether he goes back to gambling, he can become even worse. His gambling addiction can cause him much trouble.