You can be surrounded by people and feel deeply lonely. And you can live happily in solitude, missing nothing at all. So the problem isn't being without company, but the distance between the relationships you have and the ones you need. When that gap hurts and won't close, we talk about loneliness as a problem to address. In this guide you'll see exactly what it is, what types there are, why it happens, how it affects body and mind, and what can be done to get out of it, in therapy and in everyday life.
Loneliness has gone from being a private matter people barely mentioned to a public health concern. The World Health Organization places it, alongside social isolation, as a factor that weighs on health as much as other well-known risks, and devotes a dedicated line of work to social isolation and loneliness. Feeling lonely isn't a whim or a weakness of character: it's a signal, much like hunger or thirst, that something we need is missing.
What loneliness is
Loneliness is the unpleasant feeling that appears when we perceive a mismatch between the relationships we'd like to have and the ones we really have. The American Psychological Association defines loneliness in exactly this way: the discomfort of noticing a gap between the social contact you want and the one you get. It isn't the same as the number of friends listed in your phone; it's a personal assessment of whether you feel accompanied or not.
We talk about unwanted loneliness to set it apart from chosen solitude, the kind you pick and enjoy. Some people need and love their time on their own, and that's no problem. The problem is the loneliness that's suffered, the one you didn't choose and don't know how to get out of. That's the one that hurts and the reason for this article.
Types of loneliness: emotional, social and existential
Not all loneliness is the same, and telling which type you're dealing with helps a lot in deciding what to do about it. Three forms are usually described, and they often overlap.
Emotional loneliness
It's the absence of an intimate, close bond, of that person (a partner, a soulmate friend, a relative) with whom you feel seen and understood. You can have a very active social life and still carry this form of loneliness, because none of those relationships reaches the depth you need. It's the sharpest kind and the one that "more people around" covers up worst.
Social loneliness
Here what's missing is a network, a group, a sense of belonging to something bigger than yourself: colleagues, neighbours, a community. It often appears after a move, a job change or retirement, when the fabric of everyday contacts falls apart all at once.
Existential loneliness
It's a deeper form, that of feeling disconnected from life or from a purpose, even with company around. It tends to surface in moments of life crisis, facing an illness or a loss, and it has to do with meaning as much as with bonds.
Being alone isn't the same as feeling lonely
It's worth separating two things the language tends to blur. Being alone is an objective situation: right now there's no one around. Feeling lonely is a subjective experience: the distress of missing connection. One doesn't imply the other. Some people happily spend many hours in solitude and others fall apart the moment they're left alone for five minutes; and some, in the middle of a family meal, feel that no one really knows them.
Chosen solitude —what we usually call time on your own— can be restorative: it rests you, sorts out your thoughts, lets you enjoy your own things. Loneliness, the unwanted kind, is the opposite: it doesn't restore, it wears you down. Recognising this difference lifts some guilt, because the goal is never "to never be alone", but to stop suffering when you are.
How loneliness affects your health
Sustained loneliness doesn't stay in the realm of mood: it leaves a mark on the body. When the brain senses that we're socially disconnected, it switches on a low-level state of vigilance, as if the surroundings were less safe. Keeping that alert going for months takes its toll: worse sleep, more tension, more inflammation and a greater cardiovascular risk in the long run. The American Psychological Association has documented how isolation and loneliness are linked to serious consequences for physical and mental health.
On the psychological side, prolonged loneliness intertwines with anxiety and with depression: it isn't always clear which comes first, because they feed each other. It also erodes self-esteem ("if I'm alone, there must be a reason") and pushes towards behaviours that try to soothe the emptiness in the short term but enlarge it in the long one, like drinking to get through a night or spending hours glued to a screen. That's why it matters not to play it down and to treat it in time.
Why it happens: causes and risk factors
Loneliness rarely has a single cause. It's usually the crossing of several things. Life transitions that break the network of contacts weigh heavily: moving to another city, migrating, a break-up, a divorce, retirement, losing a job or a bereavement. Overnight, the routines that held bonds together disappear.
More personal factors count too: shyness or a lack of social skills, low self-esteem, past experiences of rejection or bullying, or an attachment style that makes closeness hard. And some circumstances isolate on their own: a chronic illness, a disability, being a full-time carer or living in a place where it's hard to socialise.
One factor that gets a lot of attention is digital life. Being hyperconnected isn't the same as feeling accompanied: if social media replaces real contact, instead of building bridges towards it, it can leave an even greater sense of emptiness, especially when you compare your real life with other people's edited ones.
The vicious cycle of loneliness
There's a mechanism that explains why loneliness tends to become entrenched. When we've felt lonely for a while, the brain becomes more sensitive to signs of rejection: we read an unanswered message, a look or a silence as proof that we don't fit in or that we're a nuisance. That hypersensitivity, which originally meant to protect us, puts us on the defensive.
On the defensive, we do exactly what harms us most: we withdraw, cancel plans, stop reaching out first, assume we're not wanted. Others, who can't read minds, sense the distance and pull away too. And that withdrawal confirms the starting belief —"see, I'm alone"—, which reinforces the mistrust and closes the loop. Understanding this cycle is key, because the way out isn't only "seeing more people", but switching off the threat filter that pushes us to flee from them.
How loneliness is treated in therapy
The good news is that loneliness can be worked on, with good results. Therapy isn't about "finding you friends", but about understanding what keeps it going in your case and changing it from several fronts at once.
Understanding the pattern
The first step is to name what's happening and map the cycle: which situations trigger the feeling of loneliness, what you think in those moments and what you do next. Seeing the mechanism from the outside lifts guilt and gives you something concrete to act on.
Reviewing your thoughts
With tools from cognitive behavioural therapy you learn to spot and test the automatic interpretations —"they don't like me", "they won't want to meet up"— that lead you to withdraw. It isn't about forcing yourself to think positive, but about no longer taking predictions of rejection as true when they almost never come to pass.
Rebuilding and nurturing bonds
Gradually, you practise approaching others: picking contacts back up, starting conversations, accepting plans, exposing yourself to social situations you'd been avoiding. When needed, specific social skills are trained, from listening to expressing what you feel, so that reaching out comes more naturally.
Improving the relationship with yourself
Much of the work looks inward: building self-esteem, learning to treat yourself more kindly and to tolerate time alone without living it as a failure. A word of caution here: getting out of loneliness isn't latching onto the first person who comes along. When the need for company turns into anguish, it can slide into emotional dependency, which in the long run doesn't cure loneliness, it disguises it.
Group therapy
For many people, a therapy group is an ideal space: it lets you see that others go through the same thing, rehearse contact in a safe setting and feel a sense of belonging. Sometimes the format itself is already the start of healing.
What you can do day to day
Therapy does the deep work, but there are steps in your hands that add up. You don't need a radical turnaround; small and steady often works better:
- Start with brief, low-risk contact: greeting the newsagent, chatting with a neighbour, replying to a message you'd parked. They reactivate the social muscle without so much pressure.
- Prioritise quality over quantity: one honest conversation with a single person is worth more than twenty obligatory meet-ups.
- Sign up for something regular: an activity, some volunteering, a club, a course. Sharing an interest and seeing each other often is the most natural way for bonds to form.
- Look after the basics: sleeping well, moving and getting out of the house every day support your mood and your appetite for connection.
- Set limits on screens: let social media bring you closer to people, not replace them. Swapping scrolling time for time with someone usually shows.
That said, these habits are support, not a magic cure. If loneliness overwhelms you or you've spent a long time unable to get out of it, self-help alone is almost never enough, and there's nothing wrong with acknowledging that and seeking professional support.
When to ask for help
It's worth consulting a professional when loneliness drags on and you can't reverse it, when it pushes you to isolate yourself more and more, when it robs you of sleep or mood, or when the idea appears that you don't matter to anyone. Also if you avoid people out of fear of rejection, if you turn to alcohol or screens to cover the emptiness, or if you feel life has lost its meaning.
If at any point thoughts appear that it isn't worth going on, ask for help as soon as possible: talk to someone you trust, see your doctor, or reach out to a crisis helpline in your country or your local emergency services. You don't need to hit rock bottom to take the step. The sooner loneliness is addressed, the easier it is to break the cycle before it becomes entrenched.
How the work is organised in the practice
No piece of software cures loneliness: that's done by the bond with a good professional and steady work between sessions. What a good management tool can do is take the friction out of that process, so the psychologist spends their energy on the clinical side and not on paperwork. And in a problem where continuity and not missing appointments matter so much, having the practice in order helps.
At My Psico Agenda that means a clear calendar with automatic WhatsApp reminders that cut no-shows and help sustain the pace, something especially valuable with people who tend to isolate; a free-text digital clinical record where you note how bonds and mood evolve session by session; and the peace of mind of having it all encrypted, with the data in the European Union and reachable from the computer, phone or tablet. If you work on your own, the calendar for self-employed psychologists brings all this together in one place. The program takes care of the day-to-day; the therapy, of course, is yours.
Frequently asked questions
The questions that come up most about loneliness.
What's the difference between being alone and feeling lonely?
Being alone is an objective situation: there's no one around at that moment. Loneliness is a subjective experience: the distress that appears when you notice a mismatch between the relationships you'd like to have and the ones you actually have. That's why you can be alone and perfectly content, and also be surrounded by people and feel deeply lonely. What hurts isn't the lack of company, but that gap between what you need and what you receive.
Does loneliness affect physical health?
Yes. Prolonged loneliness keeps the body in a low-level state of alert that, over time, is linked to worse sleep, more inflammation, high blood pressure and a greater cardiovascular risk. It's also associated with more anxiety and depression. It doesn't mean that feeling lonely will make you ill overnight, but that sustained loneliness is a health risk factor worth taking seriously, just like a sedentary lifestyle or poor rest.
Why do I feel lonely even when I'm surrounded by people?
Because loneliness isn't about the number of contacts, it's about connection. You can have a busy social life and still miss an intimate bond where you feel seen and understood; that's emotional loneliness. It also happens when relationships are superficial, when you don't fit into the group or when you hide what's really going on out of fear of judgement. The quality of the bond matters far more than the number of people around you.
Does therapy help with loneliness?
Yes, quite a lot. Therapy helps you understand what keeps loneliness going in your particular case, review the thoughts that lead you to expect rejection and withdraw, rebuild and look after bonds, and improve the relationship with yourself. It isn't only about meeting more people, but about changing the way you approach others and reducing the fear that holds you back. Many people notice a real change when they stop experiencing every contact as a possible disappointment.
How long does it take to overcome loneliness?
It depends on the person, on how long loneliness has been settled in and on what's behind it (a loss, a life change, shyness, low self-esteem). There's no fixed timeframe, but the realistic goal isn't to never feel lonely again, but for loneliness to stop running your life: to have bonds that support you and tools to approach others with less fear. The first gains often show up sooner than people expect, especially once the isolation is broken.
When should I seek professional help for feeling lonely?
When loneliness drags on over time, pushes you to isolate yourself more and more, robs you of sleep or mood, or leads you to think you don't matter to anyone. Also if you notice you avoid people out of fear of rejection, if you turn to alcohol or screens to cover the emptiness, or if ideas that life is meaningless appear. You don't need to hit an extreme to book an appointment: the sooner it's addressed, the easier it is to break the cycle.
My Psico Agenda