"If the client uses sad words, show concern, and offer them a tissue."
"If they use happy words, ask them how they would like to celerate."
Empathy is the ability to accurately perceive others internal states and to have affective responses to them (Fuchsman, 2015).
"The energy in the room just changed. What do you make of that?"
"What you just said resonated so deeply with me. What's true for you?"