The thing that most newbies doesn't have is self control. It's all we need to conquer our emotions but this self control can be gained through out the gambling experience that a newbie has. A newbie doesn't need to lose any amount to learn it that's why newbies should acquire that kind of attribute first so that he won't suffer from a massive loss just to get a realization about not being greedy in the casino. I myself also doesn't have the attribute of controlling myself when I was still an addict and deep realizations is what fix me and earn the attribute of being aware of what I'm currently doing and self control.
Yes, most of them, but not all of them we can generalize. in fact, there are lots of novice gamblers who play just for the fun of it. just wanted to try, after that they never came back. but really, what you say for other novice gamblers have no self-control and I agree with that. It's natural, because they don't have much experience. plus, there are also many gamblers who are not aware of the other effects of gambling. there are even many gamblers, who deny that they are not addicts. but the fact is that they can play every day, and this phenomenon is commonplace.
I guess, the problem of self-control is not only for beginners. even for us, it is not certain that we are able to control ourselves well all the time even though we are well aware that we have been carried away or overwhelmed by emotions. and this, is part of human psychology so for me it is very natural. even so, gamblers who have good self-control can avoid excessive activity from gambling sessions. but that too, must involve responsibility. at least, what we need to remember and instill in our minds, that gambling is part of entertainment. if we lose today, there's still another day. so, we will not be obsessed with chasing losses.