Soft skills are important for leaders to possess in addition to technical skills. Key soft skills that good leaders need include effective communication, listening skills, tactfully delivering bad news, negotiation skills, respectfully criticizing others, and maintaining work-life balance. Soft skills help leaders build morale within a company, maintain good relationships, and adapt to changes. The document outlines 14 specific soft skills that all successful leaders should strive to develop, such as communication, negotiation, handling complaints, and adapting to changes.