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Unfortunately, this success is difficult or even seems impossible to achieve because the opportunity for gambler to win consistently and turn himself into successful gambler is very small or almost non-existent, unless the gambler really has luck which makes him have a more guaranteed win.
Success in changing your life or becoming rich from gambling is the desire of many gamblers but they do not realize that gambling is not suitable place to achieve this goal and I am sure that 99% of gamblers are more likely to lose lot of wealth than increase their income from gambling.
The definition of gambling is actually place and activity to have fun and get entertainment not to make money, plus we come to risk money with opportunities that are uncertain so that expecting profits from gambling will only give a feeling of disappointment.
That's what I've although I've used different words, I'm still trying to convey the same thing. I know it's difficult but there are games where you can easily make some profit like blackjack or poker but those still have probability in it and at the same time you need the skills to be able to be good at it. I would agree with you that some people don't realize gambling as not a suitable way to make money but that's not the absolute truth since there are some that are aware but chooses to ignore in hopes that they're going to have a different fate.