So we really need to be responsible, learn from our experience. This is base on my personal experience, there are times that when I gamble and I'm losing, I will feel that I have to stop and not force the issue as I might lose more. So for me that is responsible gambling, stop early.
Experience they say is the best teacher, It is very sad that most people do not learn from their experience by putting up measures not to repeat the mistakes, but loosen up and end up repeating the same mistake over and over again until they are messes up financially and emotionally owing to addiction struggles.
I can agree with you that you have to stop early if you notice you are really onto a loosing streak, else you might be overtaken by emotions in no distant time and you find yourself chasing losses.