Don’t we all know that greed leads to losses in gambling? That greed kicks in when we don’t set a target making us keep playing even when we’re already up, until our luck runs out and we end up losing. Can’t we see that? Maybe that’s the reason we don’t win because we don’t know when to stop.
It's a common problem for gamblers who don't set a winning limit, because they want to gain more and probably majority of us wants that idea, right? However, if there's still a chance to stop since you already profit then do it. The result is not often in our favor hence don't wait before the casino get back your earnings.
The reason why self-control is necessary It's understandable to be greedy sometimes but be wise on knowing when to stop if you already win. Because you'll never know if on the next game the result is still what you expected it to be.