In "Acheron" by Sherrilyn Kenyon, the narrative centers on the protagonist's struggles against negativity from others. The book emphasizes the importance of not allowing toxic individuals to impact your mood or productivity. This theme resonates throughout the story, highlighting the need for self-empowerment and resilience in the face of challenges posed by others. Acheron's journey serves as a powerful reminder of the strength found in maintaining one's peace.

The quote, "Don't let those people steal your day," encapsulates this idea, urging readers to prioritize their mental wellbeing over external negativity. It encourages individuals to protect their happiness and focus on their goals, despite the distractions and hardships that may arise from others' negative influences. Through Acheron’s experiences, the author inspires readers to take charge of their own emotions and not allow others to dictate their day-to-day lives.