So instead of reacting with a defensive "I'm going to kill them with kindness" try shifting to an offensive position of just being kind. Always have self control. Always be slow to anger. Always be slow to speak. Avoid quarrels. Avoid strife. Especially at work but wherever you go, do not have anything to do with foolish and stupid arguments. Love your enemies and continuously pray for those who persecute you. Be still and let God fight your battles.
"Killing them with kindness" is out, "simply being kind to everyone" is in. Be kind to those who are worthy and those who are not. Those who have been good to you and those who have not. Those who are for you and those who are not. Those who help you and those who don't. Those who root for you and those who are jealous of you and waiting for you to fail. Those you have to work with and those you don't. Those who uplift you and those who don't. Those who are "good people" and those who are not. Those who like to start a bunch of drama and mess and those who who don't.