As long as you start gambling to earn money then soon or later you will addict to these games. That's why whether it is for fun or to make money you shouldn't gamble every day. You should gamble only a few times in a month then you can control not to addict to these games.
Let us put it in our mind that gambling is made for entertainment purposes and not for profit. People should gamble just to have fun and not for earning money. When your reason why you gamble is to earn money, then it will lead you to being addicted into it. Instead of being able to have more money, it will lead you to bankruptcy. Gambling for me doesn't help your life to become better but instead, it will lead you to darkness. Just my opinion though.