I don’t think you’re wrong, that’s the same impression I got as well. But I suppose that is to be expected in a society that tends to consider one’s vocation as the height of personal ambition.

I would also suspect the author scores highly in the conscientious personality trait. So it would follow they have high levels of discipline, derive pleasure from achievement etc. Maybe the title should be changed to “How to Work Hard (and why that matters to people like me)”