The true things that defines a responsible gambler is having the ability to have self control and risk management I think these are the most important key aspects to gambling. When you minimize risk it becomes that easier for you to manage your funds while gambling, even as you are gambling you can actually counts on when to stop and when not to stop including the amount that should be assigned to gamble with, and when you knows this or even becoming aware you could be far from losing huge while gambling.
A players self restraint is also very important because you always need to know when to stop or even take a break when necessary and sometimes that is not so easy. For example let us say you are going to a party where all your friends or relatives are gathering and on that day there is an important match you want to bet on. What would you do put your phone aside and spend time with your friends as you probably should or focus on the match and place a bet. I think in this situation it would definitely be better to forget about gambling for a day. Nothing bad would happen.