This collection brings together ten influential Harvard Business Review articles focused on building mental toughness and psychological resilience in professional life. The selected readings examine how individuals can remain focused, confident, and effective under pressure, cope with uncertainty and failure, and sustain performance in demanding environments. Topics include stress management, emotional regulation, perseverance, confidence building, and cognitive strategies for overcoming setbacks. Updated and expanded, this edition reflects contemporary workplace challenges and integrates insights from psychology, neuroscience, and leadership research, offering practical guidance for professionals and leaders seeking to strengthen inner resilience and long-term effectiveness