Mirrors work magic. Repeat the last three words (or the critical one to three words) of what someone has just said. We fear whats different and are drawn to whats similar. Mirroring is the art of insinuating similarity, which facilitates bonding. Use mirrors to encourage the other side to empathize and bond with you, keep people talking, buy your side time to regroup, and encourage your counterparts to reveal their strategy.

Never Split the Difference by Chris Voss