How to actually keep in touch with everyone you care about

Losing touch is rarely a failure of caring. It's a failure of memory under load. Relationships quietly decay without contact, and the people you'd most hate to lose are exactly the ones you assume are fine because they always have been. The research backs the unease: friendship is expensive to build - studies put it at roughly 50 hours of shared time to become a casual friend and 200+ to become a close one - so letting one fade is throwing away an investment you can't quickly rebuild.

Willpower doesn't fix this, because the problem isn't motivation - it's that no one can hold 150 relationships and their last-contact dates in their head. A system can. The rest of this guide is that system: small, externalised, and built so a busy week can't break it.

In Contact Book, every contact has a **stay-in-touch cadence** field. Never. Weekly. Biweekly. Monthly. Quarterly. Yearly. The point isn't to be precise - it's to put each person into a rough lane that the system can nudge from.

A useful starting heuristic: how would I feel if we hadn't spoken in three months? If the answer is "sad / surprised / something must have happened", they belong in monthly or shorter. If it's "oh nice to hear from you", they belong in quarterly or yearly.

Anthropologist Robin Dunbar found our relationships sit in nested circles of roughly 5, 15, 50, and 150 people, and that the inner few soak up most of our social energy - the closest ~5 take around 40% of it. That maps almost perfectly onto a contact cadence, which is why this cheat sheet works: you're not inventing a schedule, you're naming the rhythm you already feel. A deeper version lives in our ping cadence by tier breakdown.

After every meaningful interaction (a phone call, a dinner, a long voice note), open the contact and log it. One sentence is enough. "Talked about Sara's job change, said yes to brunch in May." That's the whole entry.

If you wait until tomorrow morning, the texture is gone. The next session you'll just see your calendar entry and write "talked". The whole point is to capture what you talked about so the next conversation has a thread.

Life events are the non-routine moments - birthdays, anniversaries, weddings, kids being born, parents in hospital, big work changes, moves between cities. These are the moments where reaching out matters most and where the system carries the weight you can't.

When you hear a life event coming, log it the same day. The reminder fires a few days before, and you write the message you would have sent if you'd remembered.

Every Sunday evening, open the dashboard, look at the overdue lane (people whose cadence has lapsed), and pick three. Send a message to each. That's it. Five minutes. The point isn't depth - it's continuity.

The system above runs on anything that survives a busy week. A paper notebook works for the inner ~15 and nothing more - it can't remind you. Your phone's calendar handles birthdays and one-off follow-ups but has no place for what you last talked about, so the next conversation starts cold. A dedicated keep-in-touch app earns its place once you're past ~30 people: it stores the cadence, fires the nudge, and keeps a conversation thread per person.

When you pick one, weigh four things: does it have a real cadence field, do its reminders actually fire, is there a conversation log per contact, and where does your data live. Contact Book was built for exactly this loop - cadence, reminders, a per-contact log, and life events - and it's hosted in Germany, which matters more for an address book than people expect. If you mostly meet people for work, the networking angle reshuffles the priorities slightly; if budget rules, start with a free option.