Eye Contact
Make it and keep it! Not only does focused eye contact display confidence on your part, it also helps you understand what the other person is really saying verbally.
When the eyes say one thing, and the tongue another, a practiced man relies on the language of the first. - Ralph Waldo Emerson
Looking someone in the eye as you meet and talk with him/her also shows you are paying attention. Listening is the most important human relations skill, and good eye contact plays a large part in conveying our interest in others.