Our mindset will have no effect on the results but it is something can influence how long we are going to gamble with how much money.When we expect to win money more then we are going to keep betting until our goals reached or we will accept and just gamble on other day.
That's a wrong mindset, it's so one sided, you don't just think like that, there should be an if in gambling since this is s risky way of making money.
An example of a good if is, if I did not have a good record in gambling, I should stop, that way, risk are minimize.
Everyone can control for sure but that would leave up to a specific gambler, if he is discipline, he can have the control but he can also learn that if he accepts his mistakes.