The quote highlights the complex emotions people experience when they witness others' successes or happiness, especially when they feel overshadowed by their own misfortunes. It suggests that while one can genuinely feel joy for others, it's natural to still carry the weight of their personal challenges. This balance of emotions adds depth to human relationships and our understanding of one's struggles.
In the context of Jodi Picoult's "Plain Truth," the character's reaction encapsulates this sentiment, emphasizing the importance of acknowledging both joy and sorrow in life. It reflects a nuanced viewpoint on empathy, illustrating that one's struggles do not diminish the ability to celebrate another's achievements.