It could teach us about respect. Since the boy is dutiful, he likely respects his family members, elders, and others. So respect is an important moral here. He doesn't act selfishly but considers the feelings and needs of others, which is a great lesson for all of us to learn.
A major moral lesson from 'a dutiful boy story' might be about self - discipline. To be dutiful, the boy has to have self - discipline. He has to manage his time to help at home, study well, and be a good person in society. This self - discipline can lead to a more fulfilling and meaningful life. It also shows that by being self - disciplined and dutiful, we can have a positive impact on the lives of those around us.
One possible moral lesson is the importance of responsibility. The boy's dutiful actions show that we should be responsible for our family and those around us.