In Cecelia Ahern's book "Mrs. Whippy," the theme of revenge is explored through the idea that true revenge lies in personal happiness rather than seeking retribution against others. The protagonist discovers that focusing on her own joy and well-being is far more fulfilling than harboring resentment or plotting vengeance.

This perspective encourages individuals to shift their focus from negativity to positivity, emphasizing that the best way to overcome past grievances is to invest in self-care and happiness. Ahern's message serves as a powerful reminder that transforming one's life for the better can be the ultimate form of reclaiming personal power.