It's a good thing that you realize your mistake and want to immediately change your habit, because from what I see is that you tend to gamble uncontrollably and without a plan, this will make your gambling sooner or later disrupt your finances. And it's a good idea for you to manage your bankroll and only gamble the money you have previously allocated. For your winnings, you can save some of it and don't need to gamble it all away, because you will need it later.
It would be good it he reads this because you are saying exactly what is right. If you are gambling and win and using all the money won and your bankroll to gamble all at once, you can not all the time be lucky and the day that you thought to have been winning woukd ended in losses and feelimg of unhappy. A gambler that is going like this will ended up using all his money to always gamble. So I will say that he might have financial challenges already. If he does not stop, it may not end well. @lombok, please stop this habit. It will not favour you than do you something bad in life.