Management is your day job; leadership is your career.
Managers by nature are pragmatists; leaders are dreamers. Organizations need both types to survive. Managers are required to lead and leaders are expected to manage. It is a challenge to do both well. The higher one rises in an organization, the greater are the responsibilities.
Therefore, managers learn to delegate and in doing so free themselves to be more strategic and in the process develop the talents of others and grow the capacity of the organization to meet rising challenges.
That’s what we call leadership.