Controlling emotions is very important and must be well understood by gamblers. when a gambler cannot control emotions well the gambler will get closer to failure. many people have experienced bad things when they cannot control emotions. but on the contrary, when a gambler can control emotions, they get closer to success.
Success to those who always value things which is important to remember, if you have a good presumptions that controlling your emotions will allow you make something good inside gambling then you will probably get something good, you will not push when you see that you don't have any chance, yet, you will stop and allow the day to passed and see your opportunities back the following day.