The worst mistake i ever did is when win big money in a casino site and then lost it all when come back again to play
Well, lot of people are like that also they come back to the casino or gambling site for them to get back what they lose but actually they will just lose again. And you cannot recover for whatever reason because you didn't notice that it is already an addicted illness in gambling.
It actually depends on the person himself/herself. I lost 1
BTC before and decided to try to get it back (I know the possibility that I might lose more money) but because of the previous mistakes and experience I got, I managed to get back my 1
BTC with a .50
BTC additional net profit.

well, that was a good thing that you get back your 1
BTC.
But not all people can recover for what they lose. Yes it is depend of a person who is playing with it. so if that person is really eager or can not wait to win, the result will be loosing a lot of money, because that eagerness will get you down.