How does the text compare the support from a Guru for spiritual goals versus the support from worldly family relationships?

Chapter 45 draws a stark contrast between the reliability of a Guru and the unreliability of worldly relations for achieving spiritual goals. The chapter states that family members, while showing affection, are ultimately not companions on the spiritual path. It explains that a mother and father show affection, a son is focused on the wealth he can claim, and a wife will cry for her own potential widowhood. None of these can be fully relied upon for spiritual help. In complete contrast, Chapter 45 presents the Sadguru as the true means to achieve the spiritual goal. The Guru is described as the solid mass of Brahman-consciousness, and by renouncing the transient world and meditating on Him, a seeker finds true support.