Thank you, both of you.
Yes, I usually try to write down the key points that I'm going to say. It helps a great deal, but even then I sometimes struggle to press the call button and I don't know why. I guess I want to make a good impression on people.
Dez, I understand what you're saying about making the area more comfortable. I usually go to a room with lots of space (since I pace a lot when I'm anxious) by myself before making a call because it makes it easier to focus.
And Holly, thanks for that suggestion. I will try to practice more!