Simon Sinek is a successful TED Talk presenter who credits his success to pushing past his comfort as an introvert through practice. He shared some public speaking tips in an interview. Three noteworthy tips were: 1) Show up to give, not take - make it about fostering discussion, not selling; 2) Focus on engaged "supporters" in the audience to feel more at ease; 3) Say thanks at the end to show gratitude for the audience's time.