Why does the text suggest that we can't rely on family for our spiritual goals and must depend on ourselves?

Chapter 45 explains that worldly relationships, including family, are not reliable companions for achieving one's spiritual goals because they are rooted in worldly affections and concerns. The text suggests a mother and father will show affection, a son will be focused on the wealth he can claim, and a wife will mourn for her own status. It posits that ultimately, none of these individuals can truly aid in the spiritual quest. Upon final reflection, the text concludes that only one's own self remains at the end. Therefore, a seeker of liberation is advised to give up hope in others, cultivate strong self-confidence, and gird up their own loins to achieve the spiritual goal.