That's correct, those who believes in the games they play on casino or sports bet are making big mistakes because it's very difficult to win the house. And the only way they can realize their mistakes is when they see that they have lost all they worked for and still become addicted to gamble. Although one an not lose everything he have in gamble, unless he's an addicted gambler. So the very simple thing every gambler should do is try as much as possible not to become addicted to gamble.
However, the only best strategy that can work perfectly on gamble is by gambling with an amount you can afford to lose and never spend a lot of time on gamble because that's how additions start.