Self Care Sunday is a free weekly wellness newsletter created by Stephen, a back pain specialist with over 26 years of clinical experience, certified yoga teacher, certified personal trainer, and performance nutrition specialist, author of Sciatica Secrets. This article covers the emerging clinical evidence linking emotional regulation directly to chronic pain outcomes, including a 2025 UNSW and NeuRA randomised controlled trial, the neuroscience of central sensitization and pain reprocessing, and five practical regulation tools for use during a pain flare.
Self Care Sunday · Nervous System

The practice doesn't just calm a flare. It retrains the brain's response to pain.

A 2025 UNSW trial proved emotional regulation reduces chronic pain. Here's the deeper mechanism: repeated practice changes how the brain interprets signals from the body, and five tools that train it.

Client stories, not patient files9 min read

Most of what clients bring me is not just "my back hurts." It is "my back hurts, and I am scared it means something is wrong, and I am tired of feeling this way." The pain and the feelings about the pain arrive together. New research says they should be treated together too, and there is a deeper reason why that goes well beyond simply feeling calmer in the moment.

For a long time, the emotional side of chronic pain was treated as a side effect, something pain caused rather than something that shaped pain in return. A landmark Australian trial has now shown that is backwards. But the real story goes one layer deeper still. The brain does not just register pain. It builds a model of how dangerous a given signal is, and that model is trainable. Practice the right responses consistently, and the model itself starts to change.

The research

The UNSW trial that changed the conversation

In 2025, a team led by Professor Sylvia Gustin and Dr Nell Norman-Nott at UNSW Sydney and Neuroscience Research Australia ran a randomised controlled trial of a new approach called Pain and Emotion Therapy. Half the participants received the therapy. The other half continued with their usual pain care alone.

The therapy did not target the back, the joint, or the nerve. It targeted the brain's capacity to process emotion, training people to deescalate negative feelings and build up positive ones. The results, published in JAMA Network Open, showed a clinically meaningful reduction in pain intensity for the group who received it, beyond what usual care achieved on its own.

A larger follow-up trial funded by Australia's Medical Research Future Fund is now being prepared, with recruitment beginning in early 2026. The core finding already stands: emotional processing is not a soft add-on to pain treatment. For a meaningful number of people, it is one of the more effective levers available.

The pain does not need you to be brave about it. It needs your nervous system to feel safe enough to stop bracing, and a brain that has learned that safety is the new normal. Stephen, Self Care Sunday
The deeper mechanism

Why the practice itself changes the response, not just the moment

Here is the part that does not get said often enough. Pain is not a simple readout from a damaged body part, like a smoke alarm reporting a fire. It is the brain's interpretation of signals coming up from the body, filtered through everything the brain has learned about how dangerous those signals are likely to be. That interpretation is built from experience, which means it can be rebuilt from experience too.

This is called neuroplasticity, the nervous system's ability to reorganise itself based on repeated input. With chronic pain, this usually runs in the wrong direction first. The technical name is central sensitization: the more the alarm gets triggered, the more efficient and trigger-happy the alarm system becomes, until pain signals get amplified even when there is no new damage to report. Researchers studying chronic low back pain have also observed changes in the brain's sensory maps of the back itself, sometimes described as the map becoming less distinct or "smudged," though more recent imaging work has questioned exactly how stable or universal that specific map shift is. What is well established, regardless of that detail, is the amplification itself. The dial gets turned up.

The genuinely hopeful finding is that the dial can be turned back down. The same plasticity that allowed pain to become amplified allows the brain to learn a calmer interpretation, if it is given consistent, repeated practice at responding differently.

Sensitized response
  • A flare triggers immediate alarm and catastrophic thought
  • The body braces and guards before any real threat is confirmed
  • Attention narrows entirely onto the sensation
  • Mild signals get interpreted and felt as severe
  • Each flare reinforces the same fast, fearful pattern
Trained response
  • A flare is noticed, named, and given a beat before reacting
  • The body is given a chance to soften rather than brace on instinct
  • Attention stays wider, the sensation is one part of the picture
  • The same signal is interpreted as uncomfortable, not dangerous
  • Each calm response reinforces a steadier, more accurate pattern

One of the clearest demonstrations of this comes from a trial of pain reprocessing therapy, an approach built specifically to teach the brain that certain pain signals are safe rather than threatening. Participants with chronic back pain went through four weeks of intensive sessions. Afterward, roughly two in three were pain-free or nearly pain-free, compared with a small fraction of those who received a placebo injection or continued usual care. Brain scans taken before and after showed exactly what you would hope to see: a measurable drop in activity across the regions responsible for processing pain. The change was not just reported, it was visible on the scan, and it largely held a year later.

Days
Tools like labeling and the slow exhale start lowering reactivity in the moment
2–4 wks
Consistent practice begins to show up as fewer or shorter flares
4 wks+
Structured programs report measurable, scan-confirmed shifts in pain processing
Months
The calmer response becomes the brain's new default, not an effort

This is not a promise that practice alone resolves every case of chronic pain, and it does not replace addressing real mechanical or structural issues where they exist. But for the very large share of chronic pain that is amplified, maintained, or worsened by a nervous system stuck in alarm mode, the path forward is not just managing the feeling in the moment. It is repetition. Every time you practice a calmer response, you are not just getting through that flare. You are casting a vote for what the brain treats as normal next time.

The pattern underneath

The pain and fear cycle most people don't realise they're in

Researchers call this the fear-avoidance model. It explains why two people with near-identical scans can have completely different pain experiences, and it is exactly the loop the trained response above is built to interrupt.

Pain shows up, and the mind interprets it as threat or damage.

Fear and catastrophic thoughts follow, magnifying how dangerous the sensation seems.

The body tenses and avoids movement, trying to protect the area further.

Muscles stay guarded and stress hormones stay elevated, which itself increases pain sensitivity.

The amplified pain confirms the original fear, and the loop, and the brain's learned alarm, tighten again.

This is not a character flaw and it is not "in your head." It is a nervous system doing exactly what nervous systems are built to do under perceived threat, and exactly what it has practiced doing. The way out is not to white-knuckle through it. It is to interrupt the loop at the emotional step, consistently, so the brain has new repetitions to learn from instead of the old ones.

66%
Of chronic back pain patients were pain-free or nearly pain-free after four weeks of pain reprocessing therapy, confirmed on brain scans
30%
Reduction in amygdala activity simply from naming an emotion accurately, shown in UCLA neuroimaging research
1yr
How long the pain reductions from retraining the brain's response were largely maintained in follow-up
The practice

Five things to do when pain and emotion show up together

Breathing is the one most people already know, slowing the exhale to calm the nervous system. It works, and it is worth keeping. But it is one tool, not the whole toolbox, and every one of these is also a single repetition in the larger process of retraining how your brain responds to pain. Do them once and you get a calmer hour. Do them consistently and you get a calmer baseline.

One

Name what you actually feel

Not "I feel bad." Something specific: frustrated, frightened, exhausted, resentful, disappointed. UCLA neuroimaging research found that the simple act of choosing an accurate emotional label reduces activity in the amygdala, the brain's alarm centre, by a meaningful margin, while activity rises in the prefrontal regions responsible for calm, deliberate thinking. You are not suppressing the feeling. You are giving the regulating part of the brain something to do.

How to use itNext time pain spikes, pause and silently name the emotion underneath it before reacting to the sensation itself. One word is enough.

What it trains: a faster, calmer first response to the alarm signal, instead of the automatic alarm-then-panic sequence the brain currently defaults to.

Two

Lengthen the exhale

This is the breath tool, and it earns its place. A longer exhale than inhale activates the vagus nerve and shifts the body out of sympathetic, threat-ready activation and into a parasympathetic, recovery state. It will not erase pain, but it lowers the volume on the alarm system that is amplifying it.

How to use itInhale through the nose for a slow count of four, exhale for six to eight. Repeat for one minute before deciding how to respond to a flare.

What it trains: the body's baseline arousal level. Repeated often enough, the resting nervous system itself becomes less primed for alarm.

Three

Reframe the sensation, accurately

Cognitive reappraisal means changing the meaning attached to a sensation, not pretending it does not exist. Research on pain and emotion regulation shows reappraisal increases pain tolerance and reduces the felt intensity of pain more reliably than trying to suppress or ignore it. The shift is often as simple as replacing "this means I am damaged" with "this is my nervous system being loud today, and that is not the same as danger."

How to use itWrite down the catastrophic thought that shows up during a flare, then write a second, equally honest sentence that is less alarming. Read the second one back to yourself.

What it trains: the interpretation layer directly. This is the closest thing to teaching the brain a new meaning for the same raw signal.

Four

Loosen the grip instead of fighting the wave

Acceptance-based strategies, the basis of approaches like Acceptance and Commitment Therapy, ask something different of you than reappraisal does. Instead of changing the story, you let the sensation be present without struggling against it. Studies comparing reappraisal and acceptance both find real reductions in pain experience. The two are not competitors, they are different doors into the same room, and most people end up using both depending on the day.

How to use itPicture the pain as a wave moving through, not a wall you have to push against. Let it rise and pass without bracing your whole body around it.

What it trains: the bracing reflex itself. Each time the body is allowed to stay soft through a flare, that becomes a little more available next time.

Five

Deliberately reach for one good thing

Pain narrows attention. It pulls focus inward and downward until the whole day can feel coloured by it. Pain and emotion research consistently shows that deliberately engaging in a pleasant activity, even briefly, interrupts that narrowing and builds positive affect back up, which the UNSW trial specifically trained participants to do alongside deescalating the negative.

How to use itKeep a short list, written in advance, of small things that genuinely lift you: a song, a call to a friend, ten minutes in the sun. On a hard day, pick one before the day talks you out of it.

What it trains: the brain's wider attentional habit, teaching it that pain is one signal among many, not the only thing worth noticing.

A quick self check

How tightly are pain and emotion linked for you right now?

Ten quick questions. Answer honestly. There is no wrong score, only useful information about where the loop in the cycle above might be tightest for you.

1. When pain flares, I immediately think something is seriously wrong.
Rarely
Sometimes
Often
2. I avoid activities I enjoy out of fear they will trigger pain.
Rarely
Sometimes
Often
3. I find myself constantly checking in on the pain or scanning for it.
Rarely
Sometimes
Often
4. When pain is bad, I feel frustration, anger, or sadness alongside it.
Rarely
Sometimes
Often
5. I tense my whole body in anticipation when I expect pain.
Rarely
Sometimes
Often
6. I tell myself things like "this will never get better" during a flare.
Rarely
Sometimes
Often
7. I struggle to name the specific emotion I'm feeling in a hard moment.
Rarely
Sometimes
Often
8. Once pain starts, it's hard to think about anything else.
Rarely
Sometimes
Often
9. I feel like the pain is something I have to fight or push through.
Rarely
Sometimes
Often
10. After a bad pain day, it takes a long time for my mood to recover too.
Rarely
Sometimes
Often
0 is a valid answer for every question. Answer at least one question to see your result.

Keep the practice going

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