A few months ago I tried an experiment. I turned off my phone for four days. Not as a digital detox or some mindfulness challenge I could write about later, but because I genuinely wanted to know what would happen. Who would reach out. Who would wonder where I’d gone. I kept my laptop open for work because I still had a business to run, but everything personal went silent. No WhatsApp. No social media. No texts.
By day three, I had seven missed messages. Two were from my team about a deadline. One was a calendar reminder from my dentist. Three were from people asking for something: a contact, a recommendation, a favour. The seventh was a promotional email from a restaurant I’d eaten at once in 2022.
Nobody wondered where I was. Nobody asked if I was okay.
The common narrative about loneliness suggests it peaks in old age. Retired people sitting alone in empty houses, children grown and gone, spouse deceased. We build entire charity campaigns around elderly isolation. And those campaigns matter. But they also create a blind spot, because they teach us that loneliness is something that happens to people whose lives have contracted. Not to people in the thick of careers, marriages, parenthood, and full calendars.
What I’ve found, both in my own life and in everything I’ve read since, is that this narrative misses something critical. The loneliest age in modern life may actually land right around the mid-thirties. And the particular flavour of it is one that’s almost impossible to talk about, because from the outside, your life looks full.
The Loneliness That Looks Like a Full Calendar
Research on loneliness tends to distinguish between social loneliness and emotional loneliness. Social loneliness is the straightforward kind: you don’t have enough people around. Your Friday nights are empty. You eat dinner alone more than you’d like. Emotional loneliness is more insidious. You can be surrounded by people and still feel it. As Psychology Today has explored, loneliness is a highly subjective experience, and the same circumstances that devastate one person may feel perfectly fine to another. The variable isn’t how many people are around. The variable is whether any of those people know you.
At 35, the problem is rarely that you have no one to talk to. You talk constantly. To colleagues about projects. To your partner about logistics: who’s picking up the groceries, whether the lease renewal looks right, what time dinner is. To extended family about schedules. You’re embedded in a web of communication that generates dozens of interactions every day, and not one of them requires anyone to actually see you.
I’ve written before about realising I hadn’t had a real conversation with anyone other than my wife in over a year. That piece came from a genuine shock. I genuinely like people. I’m not withdrawn by nature. But somewhere between building a company and settling into life between Singapore and Saigon, every relationship I maintained had quietly migrated from personal to functional.
The friends who used to call became the friends who texted on birthdays. Then the friends who liked an Instagram post occasionally. Then nothing. Not dramatically. No falling out. Just a slow evaporation that felt, from the inside, like everyone else was probably busy too.
The Transactional Replacement
Here’s what actually happens in your thirties, if you’re honest about it. The people who stay in your life are increasingly the people who need something from you. Your boss needs your output. Your clients need your deliverables. Your family needs your presence at the table and your contribution to the mortgage. Even your friendships, the ones that survive, often rest on a foundation of mutual utility: business contacts, school-parent networks, couples you socialise with because your partners get along.
None of this is malicious. Nobody sat down and decided to reduce you to a function. The shift happens structurally, because the institutions that used to generate non-transactional connection, the universities, the shared houses, the accidental proximity of being young and broke in the same city, all of them dissolve by your early thirties. What replaces them are institutions organised around productivity and obligation.
And so the question stops being “am I alone?” and becomes “would anyone notice if I stopped being useful?” That second question is far more destabilising. Because it reframes your entire social world as a system in which you are a node, not a person. A point of connection that exists because it serves a purpose.
The language for this kind of loneliness is only now catching up to the experience. Psychology writers increasingly talk about “existential isolation,” the sense that your inner life is fundamentally unreachable by others, separate from whether you’re physically surrounded by people. At 25, this feels like poetic angst. At 35, it feels like an accounting of what you’ve actually built.
Why Thirty-Five and Not Twenty-Five
The specific cruelty of this hitting at 35 is that you’ve had just enough time to believe you’d figured it out. In your twenties, loneliness is expected. You’re still finding your people, your place, your rhythm. There’s a built-in cultural script that says this is temporary. By your mid-thirties, that script has expired. You were supposed to have arrived somewhere by now. You have a career. Maybe a partner, kids, a home. The scaffolding of a complete life is in place.
What’s missing is harder to name.
I think about this during my early morning runs along the Saigon River, before the city wakes up. The streets are just starting to stir. Motorbikes are sparse. It’s the one hour of the day when I’m not a business owner or a co-founder or someone with obligations, just a person moving through space. And in that hour, the gap between the life I have and the connection I feel becomes almost unbearable in its clarity.
The research on male loneliness in particular suggests that men are experiencing isolation at high levels, though the phenomenon cuts across gender. What makes it especially acute for men is the cultural prohibition against naming it. You’re supposed to be stoic. Self-sufficient. A provider whose emotional needs are met by the act of providing.
Admitting that you’re lonely when you have a career and a company to run feels like ingratitude. So you don’t admit it. You fill the time. You optimise your morning. You work harder. You scroll longer.
The Disappearance Test
My phone experiment wasn’t original. I’d read about people doing similar things and dismissed it as performative. The reason I finally tried it was simpler and more embarrassing: I was jealous. A friend of a friend had been hospitalised unexpectedly, and within hours, people had mobilised. Meals were organised. A group chat was formed. People showed up.
I sat with that and asked myself, honestly, who would mobilise for me.
My wife, obviously. My team, to the extent that my absence created a problem for them. Beyond that, the list got short fast. Not because people dislike me. Because the infrastructure of care had never been built. I hadn’t invested in it. Nobody had invested in it with me. We’d all been too busy being functional.
The disappearance test isn’t really about ego. It’s a proxy measure for something deeper: do you exist in anyone’s life as an end rather than a means? Is there a single person outside your immediate household who thinks about you without a prompt, without needing something, without an algorithm surfacing your name?
At 25, the answer is usually yes, almost by default. Your roommates notice when you’re not around. Your friends text you to come out. The exhaustion of being needed hasn’t yet replaced the warmth of being wanted.
At 35, you have to actively fight for it. And most people don’t, because they don’t realise it’s gone until they run the test.
What’s Actually Lost
The thing that disappears in your thirties isn’t friendship exactly. Friendship is a word capacious enough to cover everything from the guy you wave to at the gym to the person you’d call at three in the morning. What disappears is specificity. The person who knows your particular brand of anxiety. The friend who remembers the stupid thing you said at a party in 2014 and brings it up to make you laugh. The relationship where you don’t have to perform competence or stability or any version of yourself other than the actual one.
That kind of genuine closeness requires an absence of performance, and performance is exactly what adult life demands. You perform at work. You perform competence for your colleagues. You perform wellness for your extended family so nobody worries. By the time you’ve finished performing for everyone who needs you to be fine, there’s no energy left to be anything else with anyone else.
A piece in The Guardian recently examined the mental health crisis hitting Gen X adults, and one pattern stood out: the sense of being simultaneously indispensable and invisible. You hold everything together and nobody asks how you’re doing. You are structurally necessary and personally unknown.
That paradox is what makes mid-thirties loneliness so disorienting. You can’t point to an empty room and say, “there, that’s the problem.” The room is full. The problem is that you could walk out of it and the room would keep functioning without you, reconfigured within a week, your role absorbed, your absence administrative.
What I Haven’t Figured Out
I don’t have a clean ending to offer here, because I haven’t solved this. I’m still sorting through it. What I’ve done, imperfectly, is start reaching out to people without a reason. A message to someone I haven’t talked to in six months that says nothing more than “I was thinking about you, hope you’re well.” No ask. No agenda. Just evidence that they exist in my mind without a prompt.
It feels awkward every single time. That awkwardness is the tax you pay for years of letting relationships become transactional. It’s the cost of rebuilding something that was supposed to be there all along.
Some people respond. Some don’t. The ones who respond often say something like “I was just thinking the same thing” or “it’s been too long,” and I can hear in those phrases the same quiet alarm I felt during my phone experiment. They ran the test too. They got similar results.
The loneliness at 35 isn’t a crisis you can solve with a social calendar or a networking event or a self-help book about making friends. It’s a reckoning with the kind of life you built while you were busy building everything else. A life where you matter enormously to systems and barely at all to individuals.
And the only honest place to start is admitting that.
Not to an audience. Not as a brand or a business owner or someone with insights to share. Just to one person, without performing anything, and seeing if the connection holds.
I’m still finding out.
