-snip-
Gladly, I overcome already this weakness through securing immediately my profit by withdrawing it and convert to fiat via exchange P2P to avoid gambling again for more win.
We all have our demons in gambling, and the earlier we know and accept it, the better for us because we will be able to deal with it decisively and chart our gambling plans better. For you, I would say you are smart, and that can only mean that you are experienced in gambling already, otherwise, you might be playing the revenging/greedy pattern which will never get you anywhere nice. Huge winnings can turn a later loss due to emotion and insensitivity, and our minds could be so funny at times, that it could make us misjudge to make a simple issue look like a big deal which will now compound the judgmental issue for us.
For instance, if you started gambling with just $20, and over time, you won $100 (which is 5x of the starting wager). But suddenly, the tide started going against you and you lost it back to $60 (3x). Instead of quitting at that time to reorganize yourself or even take a break, your mind could be emotionally telling you to bet more so that you might win the lost profits back despite still having a $40 win, a reasonable amount that is twice the starting wager. Before you know it if you give in, you might be in -$20

, that is why we should be smart in gambling and let our right instinct guide us and not emotion, especially when we are already in profit. What else do we want?