Extreme fatigue that rest does not fix usually has more than one cause. Physical problems such as poor sleep, anaemia, an underactive or overactive thyroid, diabetes or sleep apnoea are common and need a doctor to rule out. But emotional strain is a cause too: bottled-up feelings, a life that runs against your own values, a body you have stopped listening to, and no quiet time to recover. Those inner causes are the focus of this guide, drawn from an essay by writer Aletheia Luna, with what research says about each one.
If you wake up heavy, drag yourself through the day and feel like a hollow version of who you used to be, start with a simple rule: check the body first, then look at the mind. The two are rarely separate.
First, rule out physical causes
Before treating tiredness as an emotional or spiritual problem, make sure it is not a medical one. The NHS lists the usual suspects: poor or broken sleep, an unhealthy diet and little exercise, stress and depression, hormonal changes, infections such as glandular fever or COVID-19, some medicines, and conditions like sleep apnoea, iron deficiency anaemia, diabetes, an overactive thyroid and ME/CFS.
The NHS advises seeing a GP if you have felt tired for a few weeks without knowing why, if tiredness is affecting daily life, if it comes with other symptoms such as weight loss or mood changes, or if someone has noticed you gasping or snorting in your sleep. It also warns against self-diagnosis. A simple blood test can catch several of these causes, so talk to a doctor rather than guessing.
Basic sleep habits matter as well: regular bed and wake times, roughly 6 to 9 hours of sleep, no caffeine, heavy meals or hard exercise in the two hours before bed, and no screens in the last hour.
Why emotional strain drains your energy
Modern working life asks a lot. Longer hours, constant messages and less job security leave many people with little unstructured time, little time with family and little time for themselves. In 2019 the World Health Organization recognised burnout in its disease classification as an occupational phenomenon resulting from chronic workplace stress that has not been successfully managed, with exhaustion as its first hallmark.
The mechanism is not mysterious. Holding feelings in, staying on alert and living in conflict with yourself all take ongoing mental effort. Luna writes from experience: she describes years of chronic exhaustion, health problems and anxiety that only began to lift when she looked honestly at how she was living. Her five causes, below, are not medical diagnoses, but they are worth checking alongside a medical one.
Causes 1 and 2: unspoken feelings and avoided emotions
Holding back what you think and feel
When we keep our needs and opinions to ourselves, resentment builds. We feel misunderstood or taken for granted and often blame others, even though part of the problem is that we never said what we needed. Studies by psychologists James Gross and Robert Levenson found that actively suppressing emotions increases physiological stress responses, which helps explain why staying silent can feel so tiring.
The answer is not to unload on people. It is assertiveness: saying clearly and calmly what you want and what you will not accept. It is a learnable skill. Luna suggests starting with a guide to learning to be assertive, and recommends this book as a first read. Try one small honest request this week and notice how it feels afterwards.
Refusing to face uncomfortable emotions
Grief, shame and anger do not vanish when ignored; they go underground. Luna describes years of pushing her rage into what Carl Jung called the shadow self, and the constant fatigue and irritability that followed. Her key insight is that no emotion is "bad" in itself. Feelings are pleasant or unpleasant, and what we do with them is constructive or destructive.
Ways in include writing about what you feel, talking to someone you trust, or noticing which situations trigger an outsized reaction. Luna also suggests watching recurring dreams for hints of hidden fear or anger. That can be a useful prompt for reflection, but keep it in proportion: there is no scientific dictionary of dream symbols, and a dream about falling does not prove anything on its own. Go slowly; if old pain feels overwhelming, a therapist can help you work through it safely.
Cause 3: living against your own values
Luna calls it self-betrayal: living by everyone else's script while your own hopes are quietly shelved. The sensible voice says grow up, be responsible, do your duty; the other voice says take a risk, enjoy life, be free. When only the first voice gets a hearing for years, life can shrink to work, debt and buying things, and the result is a flat, heavy kind of tiredness.
This does not mean quitting your job tomorrow. Psychologists who study motivation have long found that activities which feel freely chosen and meaningful tend to energise people, while those done only out of pressure tend to drain them. Ask yourself:
- What would I do with an ordinary day if nobody's opinion mattered?
- Which dream did I drop because it did not seem "normal" or acceptable?
- What is one small step towards it I could take this month?
Cause 4: disconnection from your body
Busy, screen-heavy lives make it easy to ignore hunger, thirst, tension and tiredness until they shout. Luna admits she thought of herself as self-aware until chronic fatigue showed her how little attention she paid to her body. Self-awareness, she argues, is one of the most important life skills there is, and the body is a good place to start practising it.
Her own recovery involved better food, more sleep, daily exercise, fewer stressful situations and people, and time in nature. Two cautions are worth adding. If you suspect a food intolerance, such as a problem with gluten, see a doctor before cutting it out, because tests for coeliac disease only work if you are still eating gluten. And if exercise makes your exhaustion much worse for a day or more afterwards, mention it to your doctor, since that pattern is typical of ME/CFS, where pushing harder can backfire.
Gentle steps help most people: a short daily walk, regular meals, water through the day, and a few minutes of noticing how your body actually feels. Luna writes more about reconnecting with nature and self-awareness on her own site.
Cause 5: too much noise and no solitude
When did you last sit down with nothing to do and nothing to watch? Scrolling and streaming feel restful, but they keep the mind busy and are often a way of escaping rather than recovering. Real solitude is different: a quiet time to reflect on where your life is going, to be in the present moment, or to lose yourself in a creative hobby.
Research supports the idea. Experiments at the University of Rochester published in 2018 found that short periods alone, without phones or other stimulation, reliably lowered intense emotions such as anxiety and excitement and left people calmer. Start with ten or fifteen minutes a day: sitting outside, a walk without headphones, or simply looking out of a window with a cup of tea.
A practical way to start
Fatigue rarely has a single cause, so it helps to work on two fronts at once:
- Book a check-up and mention how long you have felt this way, how you sleep and any other symptoms.
- Pick one emotional cause from the list above that rings true and take one small step on it this week.
- Protect a little solitude and a little movement every day.
- Keep a short diary of energy levels for two weeks; patterns often appear that you would otherwise miss.
Luna's own conclusion is that recovery began with honesty and self-responsibility: seeing clearly what was draining her and choosing to change it. That is a good starting point, as long as it goes hand in hand with proper medical care when tiredness persists.
Sources: Original essay by Aletheia Luna, Loner Wolf, shared via The Open Mind; NHS, Tiredness and fatigue; World Health Organization, Burn-out an occupational phenomenon (2019). Photo: Lauren Rushing on Flickr.
Im in the UK is there anywhere I can get more information and advice please
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