I have come to realize that there are two principal things we should look for and focus on: comfort and discomfort. [...] Learning to read comfort an… - Joe Navarro

When confronted with mixed signals from the face (such as happiness cues along with anxiety signals or pleasure behaviors seen alongside displeasure displays), or if the nonverbal facial messages are not in agreement, always side with the negative emotion as the more honest of the two. The negative sentiment will almost always be the more accurate and genuine of the person's feelings and emotions.

When we press our lips together, it is as if the limbic brain is telling us to shut down and not allow anything into our bodies, because at this moment we are consumed with serious issues. Lip compression is very indicative of true negative sentiment that manifests quite vividly in real time.

When we speak, we naturally utilize various parts of our body — such as the eyebrows, head, hands, arms, torso, legs, and feet — to emphasize a point about which we feel deeply or emotionally. Observing emphasis is important because emphasis is universal when people are being genuine.