This is often the question that separates average from extraordinary.
We all believe we are until we explore the implications of saying yes. Saying yes to extraordinary means saying no to ordinary. Ordinary is comfortable. Ordinary is easy to understand. Ordinary is easy to accommodate.
Quitting your job to follow your dreams is not ordinary. Working long hours without pay to make your dream a reality is not ordinary. Creating new instead of improving the old is not ordinary.
Every person who has said yes understands the weight of the question. Everyone who decides to say no will never discover what lies beyond.