"I think I'm just stressed" is one of the most common things I hear in therapy. And sometimes that's true. But often, when we sit with it together, something else emerges — a worry that doesn't seem to be attached to anything specific, a sense of dread that was there long before the current problem arrived. That's when we start to talk about anxiety.
Stress and anxiety are related — they share symptoms, they can feed each other, and one can absolutely lead to the other. But they are different experiences with different roots, and understanding which one you're dealing with can help you respond in a way that actually works.
This article discusses stress, anxiety, and their impact on daily life. If you are currently experiencing significant distress, please reach out to a mental health professional or call Lifeline on 13 11 14.
What Is Stress?
Stress is the body's response to a demand. A deadline. A difficult conversation. A health scare. Financial pressure. When we encounter something that requires more from us than we feel able to give, our nervous system activates its stress response — adrenaline rises, focus sharpens, and the body mobilises energy to meet the challenge.
This is a healthy, adaptive process. Stress keeps us alert. In short doses, it can actually improve performance. The challenge comes when stress is chronic — when the demands never let up, when we never get a chance to recover, and when the stress response stays switched on long after it was needed.
Stress has a source. When the source changes or goes away, the stress tends to ease. This is one of the clearest signs that stress is what you are dealing with.
What Is Anxiety?
Anxiety, on the other hand, can feel untethered. It is the experience of worry, fear, or dread that persists even when there is nothing specific to explain it — or when the level of fear is far out of proportion to the actual situation. Where stress asks "how do I get through this?", anxiety often asks "what if something goes wrong?" — even when nothing has.
Anxiety involves the same nervous system activation as stress. But the difference is that anxiety anticipates threat rather than simply responding to one. The brain begins scanning for danger, worst-case scenarios multiply, and the body enters a state of alert that can last for hours, days, or years. This is not a character weakness. It is the nervous system trying to keep you safe — often based on past experiences that taught you the world was unpredictable or unsafe.
How They Feel in the Body
Both stress and anxiety live in the body. People often notice them before they can name them — a knot in the stomach, shallow breathing, a tight jaw, restless sleep, a racing heart. The physical experience can be identical, which is part of why people so often confuse the two.
- Tension headaches or muscle aches
- Difficulty sleeping before a big event
- Irritability or short fuse
- Feeling overwhelmed by tasks
- Fatigue after a demanding period
- Digestive changes during high pressure
- Difficulty concentrating when overloaded
- Relief when the stressor resolves
- Persistent worry that is hard to turn off
- Sense of dread without a clear reason
- Avoidance of situations that feel threatening
- Catastrophic thinking and "what if" spirals
- Physical symptoms even when nothing is wrong
- Difficulty staying present or relaxing
- Feeling on edge most of the time
- Symptoms that persist after the stressor is gone
The Key Differences at a Glance
| Stress | Anxiety | |
|---|---|---|
| Cause | External stressor (work, money, relationships) | Internal — often without a clear external cause |
| Duration | Usually eases when stressor resolves | Persists even after the stressor is gone |
| Focus | Responding to current demands | Anticipating future threats |
| Function | Motivates action in the short term | Creates avoidance and hypervigilance |
| Treatment | Rest, boundaries, lifestyle changes | Therapy, nervous system work, often longer support |
When Stress Becomes Anxiety
The line between stress and anxiety is not always clean. Long periods of stress can condition the nervous system to stay on high alert, even after the stressor has passed. Over time, this can develop into anxiety — a baseline state of tension and worry that has become the new normal.
This is especially common in people who grew up in unpredictable or high-pressure environments. When the body has learned that calm is not safe — because something could go wrong at any moment — it can be very hard to truly switch off, even in objectively safe circumstances.
So many people I work with have been managing anxiety for years and calling it stress. They have normalised the constant hum of worry, the difficulty sleeping, the sense of dread. When they finally name it as anxiety, something shifts — and that naming is often the first real step toward change.
What Helps With Each
For stress
The most effective response to stress is removing or reducing the stressor where possible, and building recovery into your life. Rest, sleep, physical movement, and human connection are the nervous system's most powerful reset tools. Setting limits on demands that exceed your capacity is not weakness — it is essential maintenance.
For anxiety
Because anxiety is driven by the nervous system's anticipation of threat rather than a specific stressor, removing the stressor does not always help. Anxiety often needs more targeted support — working with the patterns of thought and belief that drive it, building nervous system regulation skills, and sometimes gently exploring the past experiences that first taught the body to stay on guard.
Therapy, particularly trauma-informed approaches, can be deeply effective for anxiety. So can body-based practices like breathwork, movement, and somatic work — because anxiety lives in the body as much as the mind, and lasting change often requires working at that level.
When you are not sure which one it is
You do not have to diagnose yourself before reaching out for help. A good therapist will work with you to understand your experience and identify what is driving it. What matters is not the label — it is that you are getting support that actually fits what you are going through.
You do not need to know the exact name of what you are feeling to know that you deserve support.
You Do Not Have to Just Push Through
There is a cultural story that stress is just part of life, something to be endured and managed. And while some stress is inevitable, living in a constant state of activation — whether that's stress, anxiety, or a combination of both — takes a real toll on your health, your relationships, and your sense of self.
Recognising which experience you are having is not about self-diagnosis. It is about understanding yourself more clearly, so you can respond in ways that actually bring relief, rather than just coping strategies that help you survive the week.