Usually addicts will realize when they lose everything
Not even when they lose everything but when they feel that they're not contented with a few bets and they want to come back anytime or stay for a longer time. Despite of having nothing anymore, they can't chill aside and they wish to gamble again even if they do understand that the situation isn't favoring them anymore.
for those who have a strong mentality he will get up and get out by himself but if he doesn't have a strong mentality he will definitely end his life without thinking about his future, but as a friend I still pay attention to him so he doesn't do anything that harms himself.
Sometimes when you're too confident, that's also dangerous. Many of those addicts have been comfortable and believed that they've got a strong mentality until they've been beaten themselves up.