Why does the text say we can't rely on family for spiritual goals, and what should we rely on instead?

Chapter 45 explains that worldly relationships are not reliable companions for achieving spiritual goals because their motivations are often tied to worldly concerns. The text gives examples: a mother and father will show affection, a son will be focused on the wealth he can inherit, and a wife will cry for her own potential widowhood. It concludes that ultimately, no one is a true companion in the spiritual quest. Therefore, the author advises that a seeker must give up hope in others and instead cultivate strong self-confidence. Upon final reflection, only one's own self remains at the end, and this self-reliance is what will enable a person to achieve their spiritual goal.