I agree. Discipline is the king here, if you have a big win or a big defeat, you should stop, consider the odds, and only then make your next move.
Definitely, if anyone masters this, then he/she can make better calls in gambling. Discipline is the key factor for everyone’s life in every profession. If you lack discipline and let your ego control you, then definitely you will make losses. You need to set small targets and need to achieve them daily. Double is a good amount to take a temporary pause and reward yourself with some luxury. If you take stress or greed and gamble, then definitely you will make losses.
That's true self-control play a vital role when it comes to stuff like gambling. That will definitely help to minimize losses because having good self-control, one will be able to know when to stop, and the amount of risk he or she can handle ( having a good risk management) and also having the right mindset towards gambling.
The reason why they are alot of sad stories concerning gambling on how gambling as ruin ones lives and that . Is due to the way most people approach gambling, like taken it as a means of earning or worse a means for them to get rich quick. Which is wrong , one should try and keep an healthy means of gambling.