Public speaking is often a nerve-racking experience, even for the most seasoned professionals. Whether it is presenting to a large group, a senior client, or a CEO, it involves overcoming fears and doubts, being confident, and thinking on your feet. In My Rookie Moment, McKinsey senior leaders look back on presentations they gave as rookie consultants—sometimes unexpectedly and without much preparation—and the lessons they learned that helped shape their careers. Check out the videos to see what they have to say.