Honestly, the first thing that came into my mind when I was winning was to play and win again until I earn more which lead me to losses. I almost forgot all the risks of gambling and that there's no guarantee that I could win all the time no matter what my strategy is. From then on, I have set a target goal so I would know when to stop.
When you are starting a newbie, there are times that you can't control yourself and that leads to loss of your funds. Now it is good that you already have a target profit whenever you gamble. Just don't be too greedy because there are some gamblers who even they have reached their set target, they will push their luck and will gamble more so the end result? Losing instead of going home with the profits he took.
Yes, just recently I read on this forum how a guy won $200, but didn't stop and lost around $2,000 in the end.
So, I think that the first thing that
should come to mind right after someone wins big is to quit for the day. If you was lucky enough to win a good amount grateful and celebrating instead of pushing your luck further.