You can add this thing from my own experience:
- hitting a big win and getting a good luck in one game, switching to another game just to lose most of it and come back to the first game to end up losing everything. Or in another explanation, not sticking to one game every time you play.

Luck isn’t really everything in gambling if you don’t know how to stop, since the same game that been giving you wins, it will never keep making you win. Just like hitting a dice, if you win three or four times straight, and didn’t stop, there will be a losing hit at the end as long as the chances of losing isn’t below or equal to 0.

Enjoying gambling and knowing when to cash out is the key for a healthy activity, otherwise it is a highway to addiction and regret.