If a person is imaptient, most likely that person would be a very aggressive gambler that won't stop until he wins big or loses everything. Compared to a person who is disciplined enough to know his limits and to discontinue if needed
Limiting your wager doesnt help you to win, it is just actually help you not to lose too much. I dont really see this as an important thing to consider. If you wanna gamble the smart way, dont gamble at all and just invest in the site. That is the smartest thing that could guarantee you profit in the long run if nothing happened
While limiting the amount you bet or the time you spend in the casino does not help you win it helps you to keep more of your money in your pocket and that can only be a good thing, so I think it is important even if it does not increase your chances of winning.