Of course, positive mindset is what triggers a gambler to try his luck, because he believes that he can win and make profits. At the same time, we shouldn't be carried away with the hope of winning the next game and keep on chasing our losses. After several consecutive losses, it's better to take a break and quit the game. Luck is the key factor in gambling.
In other words, it could be described as overconfidence. Confidence is good, but we must be mindful of our actions. Having strong self-confidence in gambling can actually be a weapon that kills us. Many people who become addicted to gambling have this mindset, believing they can win for sure. Unfortunately, winning is quite difficult in gambling.
You're right; luck is key in gambling. Furthermore, self-control and discipline are also important, as this discipline allows us to maintain a reasonable gambling habit.