Being able to influence others is absolutely vital to the business manager who is not only responsible for his/her own destiny, but also the well-being of his/her staff and, perhaps, the future of his/her company.

Being able to influence others is absolutely vital to the business manager who is not only responsible for their own destiny, but also the well-being of their staff and the future of their company. Getting people to do what you want them to has occupied the minds of generations of scholars, not to mention dictators. Among the former, the psychologist Carl Jung was perhaps the most prominent. His concepts of the extroverted and introverted personality, of archetypes and of the unconscious are now widely accepted. However, to understand and benefit properly from Jung, you need years of...