Confidence didn’t come naturally to Vujicic. Growing up in Melbourne, Australia, he struggled with depression and was bullied at school. When he was just 10 years old, he attempted suicide. Over time, Vujicic worked on adopting a positive attitude, and, at 17, an encounter with his high school janitor inspired him to go into public speaking. The charismatic Australian now travels the world addressing huge crowds, including business groups and schoolchildren. He has visited more than 50 countries and given thousands of talks.