In "Son" by Lois Lowry, the narrative emphasizes the importance of focusing on one's journey and the aspects of life that are within personal control. The protagonist learns to confront challenges and strives for growth while navigating her complex environment. By concentrating on the ascent instead of the obstacles, she finds purpose and resilience in her actions.

The quote "Think only on the climb. Think on what you control" encapsulates the theme of empowerment through self-determination and perseverance. It encourages readers to prioritize their efforts on their personal development rather than getting bogged down by external circumstances, illustrating a powerful message of agency and hope.