Barnum argues that natural diversity in talents means different people have innate aptitudes; forcing someone into an unsuitable vocation creates lifelong struggle. A natural mechanic thrives while an unmechanical person forced into watchmaking will succeed technically but remain miserable, working “up hill” and seeking excuses to escape. Whoever excels all others in their Vocation and maintains good habits and Integrity cannot fail to secure abundant patronage and the natural Wealth that follows. There is always room at the top of any field for the truly excellent.