What the heck does that mean? Show up. When you need to have a conversation about a possible unpleasant topic, are you already upset about the subject? Do you assume there may be a dispute about it or are you gearing up for a confrontation? How do you enter that conversation then? Are you scared, tense, angry, frustrated, or apprehensive about what may happen? Whatever you are thinking, that is how you will show up. It manifests itself in our language, gestures, and body language. You could be saying all the right words, in your mind, and yet the other person is taking offense or doesn't understand your viewpoint. In essence you are giving mixed signals. If you are expecting a confrontation, your language will indicate that in subtle ways by choosing certain words that heads off a possible disagreement with your viewpoint, all the while standing rigid, arms crossed, and speaking in a cordial and professional voice.
What do you do then? Check in with yourself. Ask yourself what is the goal here. Is to get your way or is it to accomplish something. Once you have grasped what the ultimate goal is, then you can look at the conversation for what it is, a conversation, nothing more, nothing less. Imagine entering into the conversation without no assumptions, expectations, or judgments. It is what it is.
Woody Allen said that 80% of success is just showing up. He meant physically being there but I think it could also be applied to how you're showing up in your interactions. The success of an interaction is based on how you show up for it.