Quitting after loosing is a sign that you are a looser.Remember gambling is for fun only just enjoy it and dont emotional and loosing all your asset it all happens.
But still, there are a lot of gamblers or people who take gambling so seriously like their lives depend on it. I don't blame them, Gambling can be a source of income but that is so hard to do since you can't just rely on it because you can't always ensure a great or huge win every time you gamble in a casino or online.
I gamble for fun though I hope for a win, I guess that is normal since winning is part of gambling and if you win that is great since you hit two birds in one stone: one is that you win and you earned a lot of money and two because you are having fun while earning.