If I am understanding your argument correctly, certainly agree that e.g. "some people are more genetically inclined to drink". But I think It’s valuable to draw some boundaries between what we can and cannot control, even with genetically varying difficulty.

To state my original point in a potentially clearer way: I suspect there is significant genetic variation in energy, controlling for lifestyle habits. Evidence: 1) Personal observation over years of interest in this topic 2) the fact that there is extensive variation in most quantitative life outcomes, controlling for lifestyle habits