Why are worldly relationships considered insufficient for achieving one's spiritual goal, and what is the alternative path?

Chapter 45 explains that worldly relationships, including those with a mother, father, son, or wife, are ultimately unreliable for spiritual progress because they are tied to worldly concerns. For example, a son will focus on the wealth he can claim, and a wife's sorrow is tied to her own status. The text posits that no one can be a true companion in the spiritual goal. The alternative path for a blessed seeker of liberation involves giving up hope in others and cultivating strong self-confidence. Such a person must practice discrimination between the eternal (Brahman) and the transient (the world), renounce the fruits of enjoyment, and achieve virtues like calmness and self-control to achieve the spiritual goal.