In "The Time of My Life" by Cecelia Ahern, the quote reflects the struggle of self-discovery in a relationship. It suggests that when individuals are on a journey to understand their own identities, being with someone who is already complete can pose challenges. The contrast between the two states can create difficulties in the relationship dynamic.

This idea highlights the importance of personal growth and the complexities of navigating love while still seeking one's own place in the world. It emphasizes that relationships require both partners to be in a similar emotional space for them to thrive, as incomplete self-understanding can lead to misunderstandings and disconnect.