winning and losing in gambling is just like brother and sister. no one can tell you that either you will win or lose your own investment. it is a game of luck and if you are luck then surely you will win and if not then possibly lose your own. no you have to decide what do to. invest or not.
well some gambling don't need to be lucky because sometimes we just need strategy and knowledge for us to win in gambling. And the gambling experts always win in the game, because they are professionals, and they always doing this to gain profit.