In "The Return," Jennifer L. Armentrout explores the theme of holding onto grudges and the way they can impact one’s life. The quote reflects the tendency to nurture negative feelings, suggesting that resentment can grow like a thriving plant if not addressed. This metaphor highlights the comfort some individuals find in their bitterness, which can lead to a cycle of unhappiness.

Armentrout's narrative emphasizes the importance of recognizing and confronting these grudges. By portraying them as “happy little pools of bitterness,” the quote brings attention to how unresolved issues can provide a false sense of satisfaction, ultimately hindering emotional growth and connections with others. The story encourages readers to let go of such grudges to foster healing and personal development.