I initially did not have the discipline to gamble, but after I experienced something that I thought was big enough to make me aware and finally made me have to stick to the discipline in gambling so that unwanted things don't happen.
For me to Acquire the discipline it was because I lost a lot of money at one point, and I told myself no more, that I Couldn't play if I Couldn't even have the discipline to demand from myself when I had to, that in the long run that was going to hurt Me, so in view of all that I did learn, ut not in the best way, hopefully some players do have the discipline to be able to say I'm not playing Anymore at the right time.
In cases like this I believe you will be the best to actually give yourself advice because it is when something has hurt you so bad that you can decide to stop it and I feel this is actually the base to many gambler putting a pause or restrictions to their gambling habits. Gambling is one funny habit that if you fail to control it will destroy you even when you feel you don't gamble much, it's tends to grow on you if you don't set limitations to it.