As the title of the book suggests, a main theme within the narration is that of the journey. En=rique believes that his destiny lies in America. He does not dwell on the poor odds of success even if he makes it there. His only chance for his family is to get there. Enrique must travel thousands of miles in order to reach his destination, his mother. His journey is one of suffering and fear, of pain and longing. Through the lens of the author’s narration, we follow in Enrique’s footsteps as he overcomes each obstacle. The physical aspect of his journey challenges his body, as seen during his recovery from the injuries he sustained at the hands of the six men on the train.
However, Enrique's journey is not only physical, but also mental as he grows from a boy to a man. His anger, resentment, and feelings of abandonment fuel his confrontations with his mother. There are times in the book when he falls victim to his own shortcomings: doing drugs, tantalizing his mother, mismanaging his finances. His emotional journey concludes when, after he is reunited for a second time with his mother in Florida, Enrique reveals that he will stop living in the past, and will save enough money to bring María Isabel into the country so that they might work together to bring happiness into their daughter’s life. He is ready to take yet another journey, this time marked by responsibility instead of adolescent rebellion and resentment.