1. Beware of the smirk
Smiles are welcome and reassuring, but a half-smile should put you on guard. Janine Driver, a sales trainer and CEO of the Body Language Institute, says you should never deal with an insurance agent who talks to you with one side of his or her mouth turned up.
That slight movement of the face "says more than you think," Driver stresses. "It is a smirk. That is contempt. Contempt is moral superiority. It is the most dangerous micro-expression you can see."
She advises you to "pack your bags and run" if you see this expression. "From the boardroom to the barroom, if you see contempt, this is a person who is going to hurt you financially, personally."