If I face a big loss while gambling, especially one that I cannot afford to lose but for some reason I took the risk, then I will definitely not have a good day. I will then have various regrets about why I put so much money in that bet or why I took the risk. I think this is a very common problem for gamblers. Regret comes after a loss, but if you can control yourself beforehand, then it is not a problem. It is natural to feel upset when you lose big, so it is better to bet the amount you can afford to lose. The day I lost a big amount bet, my mental state was quite bad, but I later learned to control myself when I realized that gambling is not a place to make money.