I agree there isn't a standard fix. That is why we each must set a goal for we want as a outcome. It is different for each of us.
There isn't a history of heart disease in my family so cholesterol is not something I'm aiming to lower. But weight, BG, energy and mental clarity is something I want. So when I notice these things are not improving I look at what I'm doing with my eating and exercise and change it. I'm not a engineer but living with one has taught me to be more logical and methodical when approaching problems.
My doctor supports what I do because the numbers support it.