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Yes is more easier for a none addicts to avoid addictions and stay addiction-free than an addict trying to pull out of their addictions, this is the most proclaimed and workable tool that gamblers and other substance users must have at the back of their minds.
I used to say the same thing but I came to realize it doesn't really make much sense.
The reason why I'm saying this is because gamblers can't tell whether they are addicts or no. So saying: "OK, am fine am just enjoying gambling and when I 'm about to become an addict I'll quit gambling" doesn't make sense. Usually, anyone who says something like this is an addict and refuses to admit it.