Leaders learn from their failures and try again. Overcoming fear of failure is often one of the highest hurdles in becoming a leader. At times, I have thought my greatest challenge, as a professor teaching about leadership was to prepare future leaders with how to handle failures - not success. Failure should not be regarded as merely failures, but as opportunities for learning. L eadership often involves a personality who wants public recognition of their accomplishments.
Leadership is often ego-based behavior.
The amount of work and the difficulties are so great in becoming president that it takes a person who has very strong motivation. This is true to lessor extent for state and local elected offices. A unique mix of personality characteristics that we call charisma may attract people to listen, to believe, to follow an individual. Charisma is a combination of several personality characteristics including excellent communication skills, a compelling vision, a belief in oneself, etc. If a person with an attractive personality has influence we say that person has charisma.