Most likely, when speaking about gambling, the author means sports betting. If this is really the case, then there are two fundamental approaches to this matter:
1. Try to win a large sum by making small bets over a long period of time (or, as the author put it, try to win gradually).
2. Try to win a large sum by making large and carefully thought-out bets over a relatively short period of time.
It is difficult to say which of these approaches is better. Everything depends on the character and worldview of the individual player. For my part, I can say that for some time now I have begun to lean towards a small number of carefully thought-out bets on large and medium amounts. Simply because it is difficult to find many good bets. Each bet is too unique.
I also think placing many small bets in the hope of winning gradually risks becoming a gambling addiction. I personally dislike the first method because I think it wastes a lot of time and makes it difficult to break free from gambling. As for the second method, since I'm not a gambling addict, I don't know if I agree or not. Everyone has different opinions. Betting less frequently but with large amounts can cause you to lose your money more quickly. But it's still better than the first method, which wastes more of your time. Ultimately, no matter how good a gambling method is, it's meaningless if you can't manage your emotions and finances.