Calmness counts!

In order not to show your histrionics, you need to learn to be patient of what you can't do because controlling oneself is the path to his/her success. I was once told that, "The success is the one who can control his/her feeling over a skirmish." For example, you might face a range of problems, big or small, at your working place almost every day, if not every hour. Controlling yourself not to jump into any arguments, therefore, is the best way to help you to have a successful talk with you prospect buyers.