Have you ever felt nervous in a tough situation and unable to perform at your best? When faced with a difficult job interview, team meeting, or important pitch, many people crumble under the stress. So how do you make sure that you bring your best self to work when you need to? Television presenter Carole Machin describes the challenges of being live in front of millions of people and needing to appear calm and confident. She has developed skills and simple strategies throughout her career that anyone can use to perform at their best.