Final answer:
The statement is true. Leaders and managers need to focus on their own development before leading and managing others in complex organizations.
Step-by-step explanation:
The statement is true. The idea that leaders and managers should focus on their own development before leading and managing others is a key concept in leadership and management theory. This idea suggests that leaders need to develop self-awareness, emotional intelligence, and effective decision-making skills in order to be effective in leading complex organizations. Mahatma Gandhi's famous saying, 'Be the change you want to see in the world,' exemplifies this theory, emphasizing the importance of personal growth and self-transformation as a foundation for effective leadership.