In "The Time Keeper" by Mitch Albom, the protagonist experiences profound sorrow due to the losses he has faced. This moment of sadness leads to a significant realization about life and attachment. He understands that clinging to people, moments, or material possessions can ultimately lead to emotional pain and heartbreak.

This lesson emphasizes the importance of letting go, highlighting that while it's natural to cherish memories and relationships, an overattachment can hinder personal growth and happiness. Embracing change and accepting loss can be essential to healing and moving forward in life.