It is not just having a positive mindset; discipline must also be there because when there is no discipline, a lot of rules and understandings are broken just for one to do what they desire. There are so many gamblers who have a positive mindset in gambling and understand gambling very well, but when they lose, it is so difficult for them to let it go; they go after their loss.
Having a positive mindset in gambling is not enough. If it were just about having a positive mindset, every gambler would have that ability to let their losses go, but maintaining good discipline in gambling is what seems to be very difficult for most gamblers. That is why they have no threshold for gambling.
Discipline is needed to make sure you keep up with your strategy. Just an example, if I limit myself to 50 dollars a month and nothing more on losses, that means I will protect myself from losing too much, and that is what we call a strategy.
But I also would need discipline because that is what will prevent me from ignoring my strategy, if I do ignore then I would end up with losses more than 50 dollars and that would mean I will not follow my strategy and end up worse. This is why I think it's clear that we are going to need both a good strategy in our hands and also discipline to follow that strategy as well. If we do both of these then we are going to end up with a good result and should not be wondering what's wrong.