In the United States, a handshake is often used as a greeting. Merriam-Webster's Dictionary defines a handshake as "a clasping, usually of right hands, by two people as in greeting or farewell." Handshakes may also be used to congratulate someone or to formalize an agreement. When you shake hands with someone, you convey a message about yourself. Whether they recognize it or not, people will make assumptions about you based on the quality of your handshake. To make a positive first impression, follow these steps for a confident, comfortable handshake.