Interview anxiety gets treated as a confidence problem. The standard advice: believe in yourself, remember your achievements, take deep breaths before you walk in.
That advice is not wrong. It is just incomplete, and it misses where most interview anxiety actually comes from.
Where the Anxiety Actually Comes From
The dominant source of interview anxiety is not low self-esteem. It is uncertainty about performance. Specifically, candidates do not know what their answers actually sound like. They practice in their head, where every answer is coherent and well-paced. Then they get in the room and cannot tell whether what is coming out of their mouth is good or not.
That uncertainty creates anxiety. And the anxiety makes the performance worse, which creates more uncertainty.
The research on performance anxiety is consistent on one point: anxiety decreases when performers have accurate feedback on their skill level. Athletes who can measure their progress get less anxious at competitions, because they know what they can actually do. Candidates who have heard their own answers and received specific feedback on what is working are meaningfully less anxious in interviews.
What to Do About It
Record yourself answering questions out loud. This is the single highest-leverage thing most candidates skip. The discomfort of listening to yourself is real. That discomfort is also exactly what tells you where the problems are.
Get specific feedback on specific things. "You seem nervous" is not useful. "Your filler rate jumps in the first 20 seconds of every answer" is useful, because it tells you what to work on.
Do enough repetitions that the structure becomes automatic. Anxiety rises when you have to think about multiple things at once. When STAR structure is automatic, you can focus on content. When the content is automatic, you can focus on delivery.
Simulate pressure in practice. Answer questions you have not seen before, without stopping or restarting, under time pressure. If your only practice has been comfortable, performance under discomfort will feel harder than it has to.
What Not to Do
Avoid scripts. Memorized scripts increase anxiety because they give you something additional to fail at. You can forget the script on top of forgetting your story. Prepare your stories. Know the key points. Let the specific words come naturally.
Signal measures your delivery across multiple sessions so you can track whether filler density, pace, and structure are actually improving over time. Seeing that data tends to reduce the uncertainty that drives most pre-interview anxiety.