It is estimated that a person's IQ only contributes approximately 20% to their success, leaving the rest up to other factors like their Emotional Intelligence. Traits that make up Emotional Intelligence, like self-control, empathy and perseverance, are factors that can be improvedâunlike IQ which remains relatively fixed from early childhood. Additionally, doing what you are good at and what you enjoy, recognizing weaknesses and strengths, and working hard also important factors in success. Using real role models from history, this book illustrates the importance of people skills in achieving success.