Separate from how you run a user interview to get data is your "interviewing manner:" the style, poise, and calm you bring to this type of conversation, and how you deal with difficult or unexpected situations. It's the ability to step back and truly listen, to allow your open and honest curiousity help you connect with your interviewee. This isn't just applicable in user interviews: it's how you bring yourself to interviewing job candidates, interviewing stakeholders, gathering information in meetings, and making sense of new and unfamiliar areas you're exploring in conversation.
Your interviewing manner will share good characteristics with all good interviewers, points of healthy and effective technique, but your style will be your own. Eventually, your interview manner will encompass the arc and high-order architecture of how you approach interviews, and flow down through the details—the way you use silence, the sounds and affirmations you use, your techniques for absorbing the unexpected and finding a healthy path forward.