Ask people what made the biggest difference in their career and almost nobody says a productivity app. They name a person: the mentor who opened a door, the colleague who became a co-founder, the client who became a friend.
Harvard professor Arthur C. Brooks, who has spent years studying the science of happiness, puts it plainly: “Intimate relationships are one of the biggest levers each of us has when it comes to feeling happier.” In his work he keeps returning to the same set of pillars — faith, family, friendship and meaningful work — and his advice is always the same: these are things you have to keep investing in.
The compounding mechanism
Relationships behave like capital. A single lunch does little. A lunch every quarter for five years changes what someone is willing to do for you — and you for them. Trust accumulates, context accumulates, opportunities start to find you instead of the other way around. Like compound interest, the early deposits matter most and the cost of a missed period is invisible until much later.
The research backs this up at the level of organisations, too. Gallup has found that having a best friend at work is what distinguishes high-performing teams from low-performing ones — and that companies that move from three in ten to six in ten employees with a close friend at work see meaningfully higher profitability and customer engagement. Cornell researchers who followed fire crews for fifteen months found that platoons eating together showed roughly twice the cooperative behaviour of crews dining alone — and performed better at their actual jobs.
So why are we under-invested?
Not because we don’t care. Because of friction. Finding a date takes fifteen messages. Choosing a place is a negotiation. Booking the table is a phone call nobody makes. And no system reminds you that it’s been four months since you saw someone who matters.
Each obstacle is small. Together they’re why the lunch “we should definitely have” never happens — and why networks quietly decay while we’re busy being productive.
Remove the friction, keep the compounding
This is the entire premise of Circleup: make the deposit effortless. Share your availability without exposing your calendar, agree a time in one tap, let an AI agent phone the restaurant, and get a nudge when a relationship is due for its next instalment.
The science says relationships are the highest-yield investment available to you. The tooling should finally act like it.