I'm also like you, managing and controlling my emotions in order to not make people know what happened to me.

I have a friend who can't control emotion, so it's easy to know if he won or lost, personally I don't really care with him because our relationship aren't close enough.

I think it's normal for someone to be happy or mad while gambling in short time, I just don't understand how people can stay in the same mood after few days. Come on, it's over and not a big problem as long as we gamble with small amount.