Article
How Many Hours Does It Take to Make a Friend?
Jeffrey Hall
Hall put numbers on friendship: roughly fifty hours to a casual friend, considerably more to a close one. It explains why adult friendship feels hard rather than impossible.
Tool 35 · Develop yourself
This exercise assumes you already know something needs to change. It will not tell you to join a club.

A guided 18 to 22 minute conversation using ChatGPT. Free, no account, nothing to sign up to.
01
Copy
Take the TAIU prompt.
02
Paste
Open ChatGPT.
03
Talk
One question at a time.
Copies the TAIU prompt. Paste it into ChatGPT.
You don't need ChatGPT Plus. The free version is fine.
Somebody has to suggest things repeatedly for nothing. If it is not you, it is nobody.
Most dormant friendships are one message from being live again.
What you'll explore
A note from Mark

The bit nobody says out loud is that adult friendships require somebody to do the admin, and most people are hoping it will be somebody else. If the circle is going to reform, a good deal of the early work is you suggesting things that other people are pleased about but would not have arranged.
The second thing is that people try to rebuild what they had rather than what they want. A circle built around a pub at twenty-eight is not the circle a forty-two year old with two children and a knee injury actually needs.
Before building anything, I would look at what has gone quiet. Most dormant friendships are not over. They are waiting for one message from either party, and neither party sends it because both assume the silence means something.
And there is an awkward stage. Three or four occasions where it is not quite comfortable. Everyone treats that as evidence it is not working. It is just the stage.
What you'll get
01
What happened
02
What you want now
03
What is dormant
04
Your contribution
+
Your TAIU handover — a portable summary of everything the conversation established.
What now?
01 · Save it
What happened to the circle you had.
02 · Test it
Message the person who has been dormant longest. No explanation for the gap.
What I would do
Establish the cause before the remedy. A move and a divorce leave different holes.
Ask what you want now rather than reconstructing what you had at twenty-five.
Look at what is dormant first. It costs a message.
Be honest about contribution. Somebody has to organise things.
Accept the awkward stage. Adult friendships are slow and there is no way round it.
Test it
Are you waiting for somebody else to organise it?
Do you want these people, or do you want the version of yourself that existed around them?
What would you actually say yes to on a Tuesday in February?
The alternative
The expected conclusion is that you need to build something new. Often the evidence points somewhere cheaper. One or two dormant relationships may deserve investment before any new circle is attempted, and the effort is a fraction of it. Sometimes the loss is not of people at all but of a context that produced contact without effort, which is a different problem and needs a repeated setting rather than new friends. And occasionally what looks like a thinned circle is a deliberate narrowing that has been mistaken for a failure.
Think about this
Take this to Ask Mark
Interpretation, not another copy-and-paste exercise.
Take this to Ask Mark →Finished the exercise?
Tell us whether it helped and what you discovered. It takes less than a minute.

Next tool
If you are not sure what is actually left
Further thinking
How Many Hours Does It Take to Make a Friend?
Jeffrey Hall
The Strength of Weak Ties
Mark Granovetter
The Art of Gathering
Priya Parker
Article
Jeffrey Hall
Hall put numbers on friendship: roughly fifty hours to a casual friend, considerably more to a close one. It explains why adult friendship feels hard rather than impossible.
Article
Mark Granovetter
Granovetter's paper is the reason acquaintances matter more than they feel like they should. Useful when a life looks thin but is actually broad and shallow.
Book
Priya Parker
How to create more meaningful time with other people rather than simply more social activity.
Book
Vivek Murthy
Loneliness isn't always about physically being alone. People can be surrounded by colleagues, family or social activity and still lack relationships in which they feel genuinely known.