Yes, self-control is very important in holding back emotional feelings when we experience defeat if we cannot control ourselves then new problems will arise that we should not have. Feelings of emotion when losing are indeed natural and appear suddenly to gamblers, yes, it could be because they do not understand and are not ready to accept defeat just like that, especially if the gambler really expects a big win there, then his emotions cannot be held back easily.
That is why we must learn about self control to prevents the bad thing that can occurs to use when we playing gambling. We can also handle our emotion not to becomes high because we will realizes if our emotion start to increase and will stops from playing gambling immediately. We will not risks ourselves by keep playing gambling when our emotion start increase because we know that can makes us lose control. Feelings of emotion when losing will increase but if we can handle ourselves, we will not gets any problem because we know how to stops that and still control ourselves.
Fear is a factor that makes some players not stop gambling. Humans have this fear of loss, but gamblers portray the opposite. They take the risk without calculating. Which attitude, shows how gamblers need to accept that they can lose all funds in a session. If they had this in mind, the fear of loss mindset would help regulate the player from taking too many risks.
Although in real life, fear of loss is a barrier to success in most cases, it could be helpful to gamblers. I suggest that such players set achievable goals and follow the process.