In Cecelia Ahern's book "The Year I Met You," the central message emphasizes the importance of seizing the moment. The quote highlights the necessity of taking action immediately when one desires to achieve something or express feelings. It stresses that life is fleeting, and procrastination can lead to missed opportunities.

Additionally, Ahern points out the significance of personal responsibility. The individual's choices and actions shape their life, ultimately reminding us that we are accountable for our experiences. This sentiment urges readers to actively engage in their lives rather than leaving crucial aspects to chance or others.