Why gambling addiction, the more you lose, the more you want to fight?

It was just fun at first, regardless of winning or losing. After a small win, I tasted the sweetness and wanted to pursue excitement and increase the gambling lottery. But ten bets and nine losses, once winning or losing exceeds the actual ability to pay, will induce anxiety, eager to turn over the book. As a result, the more you lose, the more you want to turn over the book, and it becomes gambling. A vicious circle.