Vengeance can consume a person from "summary" of The Princess Bride by William Goldman
Inigo Montoya's life had been defined by vengeance. Ever since the six-fingered man killed his father, Inigo had dedicated himself to seeking revenge. His entire existence revolved around this singular goal, consuming every thought and action. The burning desire for retribution fueled him, driving him forward with an intensity that was both admirable and frightening. As the years passed, Inigo's obsession with vengeance only grew stronger. It became a part of him, shaping his identity and purpose in life. He trained tirelessly, honing his skills as a swordsman in preparation for the day he would face his father's killer. Nothing else mattered to him; all other concerns faded into insignificance compared to his thirst for revenge. Inigo's pursuit of vengeance took a toll on him, both physically and emotionally. The constant anger and hatred that fueled him also drained him, leaving him exhausted and hollow inside. He became a shell of his former self, consumed by his need for retribution to the point where it overshadowed everything else in his life. Despite the toll it took on him, Inigo could not let go of his quest for vengeance. It had become too deeply ingrained in him, too integral to his sense of self. He could not imagine a life without it, even if it meant sacrificing his own well-being in the process. In the end, Inigo's relentless pursuit of vengeance led him to a moment of reckoning. Faced with the opportunity to finally confront his father's killer, he realized that his quest had consumed him completely. He had become so focused on avenging his father's death that he had lost sight of everything else that mattered in life.- Allowing it to consume you completely can lead to ruin. Inigo's journey is a reminder that vengeance, no matter how justified, can ultimately be a destructive force if taken to extremes.