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Having a an rancor, gives you a catalyst that you desperately want to achieve, because of jealousy, contempt, animosity a motive to propel yourself forward. Engulfing yourself in malevolent to drive you to the breaking point.
Will be consumed by emotions and sway from your first true goal. Engulf yourself in the negativity but don't let it consume you, instead use that frustration to become better than them, become a greater person to your previous self.