In The Kite Runner, how does Amir's betrayal of Hassan, and the guilt he feels, affect his relationships with other characters in the novel?

The guilt that Amir feels haunts him for many years, and
he feels an emptiness in his life long after he relocates to California. Although he
takes pride in his accomplishments as a student and, later, a writer, he feels a general
unworthiness of his inner character. He questions whether he is worthy of his wife,
Soraya; and becoming a part of her illustrious family and General Taheri. His inability
to father a child with his wife further symbolizes his past guilt. Though his
relationship with Baba improves in San Jose, he stills feels inferior to his father and
recognizes that Baba's past accomplishments still far outweigh his own. He is made to
feel unworthy by his driver, Farid, upon his return to Afghanistan, and it is only after
he takes the steps to retrieve Sohrab does Farid show him respect. The fact that Amir
never made any attempts to locate or contact Hassan or Rahim Khan while in America shows
that he was just trying to forget his past transgressions by distance
and disassociation. It is only after Rahim summons Amir to Pakistan that Amir begins to
see how his guilt can be alleviated.