You cannot control how you win, it is always a 50 50 chance, you can only help yourself retain your win by withdrawing from the casino after a good win so you can both control the illusion that you can keep winning more and more and avoid the chances of loosing everything back due to your overconfidence.
Winning is by luck so there's no way a gambler can know when he will be lucky to win. If gamblers can know when to win I'm sure that many gamblers life would have changed. Some gamblers think they can win more that is why they keep playing with the money they won but funny enough that they don't get the same opportunities they got earlier. Greed makes gamblers lose opportunities.