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Think of someone you know who seems completely self-sufficient. They’re capable and friendly at work, and they turn up to things. But no one really knows them. They rarely ask for help, they change the subject when conversations get personal, and when life goes wrong, they handle it alone.
It’s easy to assume that person simply prefers it that way. Sometimes they do. But psychology suggests that for some people, keeping others at a distance isn’t a personality trait. It’s a form of protection learned early in life.
How common it is
Having no close friends is more common than many people think. In a 2021 survey by the Survey Center on American Life, 12 percent of Americans said they had no close friends, up from 3 percent in 1990. A 2023 Pew Research Center survey put the figure at 8 percent.
There are many reasons for this, including moving often, demanding jobs, health problems, grief and simple bad luck. Childhood experience is one possible factor, not the only one.
What attachment theory says
Attachment theory, developed by psychiatrist John Bowlby and psychologist Mary Ainsworth, looks at how early relationships with caregivers shape the way we approach closeness later in life.
When caregivers respond warmly to a child’s distress, the child learns that needing others is safe. When caregivers are consistently dismissive, rejecting or unavailable, a child may learn a different lesson. Showing need doesn’t bring comfort, so it’s better to hide it.
Researchers call this pattern avoidant attachment. Psychologists Mario Mikulincer and Phillip Shaver describe how people with this style use “deactivating strategies.” They play down their own need for others, avoid emotional topics and rely heavily on themselves.
Calm on the outside, not always inside
People with avoidant tendencies often appear calm and unbothered. Research suggests that appearance can be misleading.
Studies by psychologist Chris Fraley and others have found that avoidant adults can be very good at suppressing their emotional reactions, but that doesn’t mean the feelings disappear. Other research has found that people high in avoidance often believe expressing distress would burden the people closest to them.
The brain science of rejection helps explain why distance can feel safer. In a well-known 2003 study, Naomi Eisenberger and colleagues found that being excluded from a simple online ball-tossing game activated part of the cingulate cortex, a region also involved in the distress of physical pain. Social rejection hurts in a real, measurable way. For someone who learned early that reaching out leads to rejection, avoiding closeness can feel like avoiding pain.
The trade-off
The problem is that the same strategy that protects against rejection also blocks connection. Avoiding vulnerability means fewer chances to be hurt, but also fewer chances to be understood and supported.
That matters for health as well as happiness. Research has consistently linked loneliness and social isolation to higher risks of depression, heart disease and early death. The World Health Organization estimates that loneliness affects about one in six people worldwide.
Not everyone without close friends is avoidant
It’s important not to overstate this. Introversion is real, and many introverts have a few deep friendships and are perfectly content. Some people genuinely prefer solitude and feel no lack.
Attachment research mostly describes tendencies across groups, not fixed labels for individuals. You can’t tell from the outside why a particular person has few close friends, and childhood is not destiny. Attachment styles can shift with supportive relationships and experience.
If this sounds familiar
If you recognize yourself here, the goal isn’t to force intimacy overnight. Small steps work better. Try sharing something slightly more personal than usual with someone you already trust, and notice how they respond.
It can also help to remind yourself that one bad experience doesn’t predict every future response. Therapy, especially approaches that focus on attachment and relationships, can provide a safe space to practise being known.
If someone in your life seems to keep everyone at arm’s length, patience matters more than pressure. Consistent, low-key kindness can make closeness feel less risky over time.
