It's like you can win an easy win once in a blue moon. But there are times that gamblers will win an instant easy win but it will be recovered again when they gamble and will be losing from their bets. This is the life in gambling, the path is really unreliable and no one can tell you a definite way of winning with an easy way.
Gambling is not like this. You keep on winning till you know how to control your bet size. But what most of us gamblers do is that they can't control their bet size. That's where size of your bankroll comes into play and that's the reason when house always wins.