Yeah you right. You understand what I meant up there. A person who does not have the ability to control himself and his emotion can not make a good decision or draw a strategy about gambling. His mind is 100% focusing on winning or recover what he has lost so basically his mind is not clear to start a game with his own strategy.
Whatever the strategy you use, you will end up loser if you choose to play a luck-based games. So before playing a gamble, a player should know first that he can fully control himself. Whenever he want to stop from betting it would be easily on his side.