If interest is the engine of good conversation, questions are the fuel, and the most powerful of them all is the humble follow-up question. Master this one move and your conversations will flow more easily than any clever remark could ever make them, while your own anxiety quietly drops, because the spotlight is on the other person.
Open beats closed
First, favor open questions over closed ones. Closed questions can be answered in a single word and tend to stall: "Did you have a good weekend?" gets "Yes," and you are both stranded. Open questions invite a fuller answer and open doors: "What did you get up to this weekend?" invites a story. The simple habit of preferring questions that begin with what, how, or "tell me about" keeps conversation moving almost by itself, because you are handing the other person room to talk, and most people are glad to take it.
The magic of the follow-up
Better still is the follow-up question, because it proves you were actually listening, and that proof is rare and moving. Most people, in most conversations, are waiting for their turn to talk. Someone mentions they went hiking, and the ordinary move is to jump to your own hiking story or change the subject. The follow-up move is to ask: "What draws you to hiking?" or "Where's the most beautiful place you've hiked?" These say, unmistakably, I heard you and I want to know more, and their effect is almost magical precisely because so few people bother. Attentive listening of this kind is part of the connection the American Psychological Association describes as protective against loneliness.
Listen for the open doors
Here is the technique that dissolves the fear of the blank mind. In almost everything a person says, they leave little openings: mentions of a place, a feeling, an activity, a person, a plan. Each is a door. This means you never have to generate topics from nothing. You only have to listen for the doors, which the other person keeps handing you, and walk through the ones that interest you. Someone says they just moved from out west and started a new job, and you have three doors in one sentence. The conversation is not a well you must fill from your own reserves; it is a river the other person keeps feeding.
Why this calms you too
There is a gift here for your anxiety. While you are genuinely curious about someone and listening for doors, there is simply less room in your mind for self-monitoring. The very move that makes you a better conversationalist also quiets your fear, because attention only points one way at a time. This outward focus is one of the most effective shifts for social anxiety, and it costs you nothing but the willingness to be interested. Building this kind of warm attentiveness supports the connectedness the National Institute of Mental Health links to wellbeing.
Try three follow-ups in your next chat
Skills become real through practice, so give yourself one small, specific task in your next few conversations: ask three genuine follow-up questions about something the other person said. Not clever remarks, not impressive stories, just three moments of tell-me-more curiosity. Someone mentions a trip, and you ask what the best part was. They mention their work, and you ask how they got into it. They mention a hobby, and you ask what drew them to it. That is the whole task. Notice, as you do it, how the conversation flows more easily when your attention is on them, how the other person warms and opens up, and how much less anxious you feel when the spotlight is not on you. Three follow-ups is a low enough bar that you can hit it even while nervous, and it reliably transforms the feel of a conversation, because so few people bother to ask them that the ones who do stand out immediately as warm and genuinely interested. Do this a handful of times and it stops being a task you remember to perform and becomes simply how you talk to people, which is the goal.
Follow-up questions pair naturally with real listening. For that, see how to be a better listener, and for the full craft, Unjudged.