Self control is just something else that we talk about almost all the time but not all gamblers take that very seriously as it appears hard for them to follow, I’m happy to see that in your last statement you said “don’t be too greedy” which show acknowledging that gamblers are always greedy in nature it’s just a matter of how much you can control that greed.
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This is 100% true, really, even though we can give advice to others, it becomes very difficult to apply it in our own lives, especially when bad things like emotions and addictions are involved. Not everyone has the ability to control themselves, especially when it comes to gambling. No one can get out of gambling addiction just by wanting to, because its addiction is so terrible that even if the gambler wants to stay away from gambling, he will not be able to stay away from gambling because of this addiction. Because the thing is that this addiction controls the gambler's mind.
Getting out of gambling addiction is not impossible, just like you said, it takes patience and time to get rid of this addiction. Yes, if the gambler gradually reduces the amount of gambling, then at some point this addiction will completely end. But for this, it is necessary to have willpower.
If you are determined and be consistent at your aim, I believe you can do it. But it takes a lot heck of a time. Looking back, I was addicted to gaming in the past. I would play all day long on my mobile and pc. It affected my overall growth and everything. But now I rarely play any games. It doesn't interest me that much anymore. I kept myself busy with other things, focused on them, and the addiction faded away slowly by slowly.
It's the same with controlling our emotions. With time, we just have to build up consistency and focus with a broader view in mind. If we can keep that up, we'll be able to control our emotional in bad situation and not make any impulsive decisions...