Usually, people who win in gambling but not able to cash out or save their winnings and I think this has something to do with a Healthy mindset.
If you do not have the intention to save the wealth, you will lose all your winnings by risking them again in another gambling bet.
Only a mentally strong person who has control over emotions and have money management skills would be the real winner here and will become rich eventually.
It's true. Gamblers lose their winnings because they want to make something extra and a little more than what they won. I am a gambler myself, and I often win double what I deposit. But, most of the time, I want to round the figure. For example, I deposited $20 and won another $20. My balance is $40, but I wanted to round it to $50.
Guess what happens, then. I end up losing them all, including my deposit. We always think we may be able to win a little more, and most of the time, we continue to gamble after having a win. We should have cashed out a portion of the winnings so we don't lose them all.