An HPO leader builds effectiveness through paradoxal mixture of personal modesty and professional strength, he knows that it is good to be an enemy of the excellent and uses that knowledge in leading enterprises. An excellent leader develops those qualities that make him above average to perfection, his philosophy of effectiveness is: reinforce the qualities that make you strong. The study of HPO models can contribute to the easier surmounting of oppositions in our national culture in accepting and implementing the leader concept of management. Leaders of the 21st century meet with the tasks that will be successfully accomplished on condition that they realise that it is the unceasing learning that enables high standards, ambitious goals and a true feeling of a mission in life.