So, whenever you win a big prize, it is recommended to cash out the prize. Just come back again to play after you enjoy your winning. 
One can also use their winnings as their bankroll for the next time they gamble if the amount is significantly high, they can only use a portion of it for their next gambling session and use the remaining money for something useful that they want to do but didn't have funds for, I mean we all have something in our minds that we want to buy or do but we lack funds for that because of having a very tight budget, such extra cash won or gotten from somewhere can be used for that.However, the majority of gamblers will make the mistake of keeping the balance inside their gambling account thinking that they will gamble again with it and win more money with it and they create an imaginative target in their mind to reach with that money but what happens is they lose it all the next time they gamble because you can't win all the time.
It's also a common mistake. The reason for that is that gamblers don't want to make an extra effort to withdraw and secure their capital. Gamblers do not want to be interrupted during gambling as they might lose focus on playing.