When you're running your sales calls, are you having fun?
You should be, if you're not, you need to learn how to loosen up and run the call with confidence and finesse, don't let anything dictate how well or how well you don't run the call except yourself. Leave all emotions away from the table and put on your suit of confidence.
This is your arena, your specialty, your expertise, let it shine and show everyone what you have to help them achieve their goals.