Well, I have a saying when I play gambling, or, let's say, a mindset: "Profit is a profit; it doesn't matter how big or small it is as long as I win, not lose." This phrase serves as my limiter or boundary when I gamble. why? so that I don't feel what you feel, like having regret for not raising your stake or blaming yourself for not putting in a much higher amount, because it could be greed, you never get contented, and the result could be bad, like betting more and increasing the amount, then suddenly you lose, then you lose more than what you get from winning. In short, don't be greedy, be happy. What you earn is a win no matter what amount it is as long as you don't lose any money, period.