There are many people who will find it difficult to do this, because they are already aiming to make a lot of profit from gambling.
But when they start playing, they keep losing their money until they become too addicted.
-cut-
A gambler who's not strategic in his gambling activities is likely to either end up as a gambling addict or continue to lose his gambles.
When I started gambling, I was gambling with the intention of winning every of my gamble but didn't know I needed to be strategic. At first I was always winning but when I started losing, it became a losing streak because I wasn't strategic. As a gambler, if you can't be strategic, then the best thing is to avoid gambling