person A: I went to the casino with my spouse_comma_ lo and behold I won a large amount of money.
person B: That's great!  Did you win it on a table game or at a machine?
person A: I won it at the machine. I am not  gambler so I guess it was beginner's luck.
person B: Did you stop playing after that or did you try to win more?
person A: I stopped playing_comma_ I was afraid of losing it all.
person B: I understand.  I play every now and again and I usually quit while I'm ahead.  It always ends up that I'm waiting on my friends to lose all their money so we can go home!
person A: That would be sad to win a lot of money_comma_ then lose it all.
person B: Yeah - the first time I went with friends_comma_ I won 100 bucks but ended up giving it back to the casino.  I told myself that if I won money like that again_comma_ I'd just stop and take the money home.  It works out well!