A food truck owner who knows her regulars’ orders has a kind of wealth that never shows up on a bank statement.

Knowing people and being known is a real asset even though no account anywhere records it. An owner who remembers an order holds a relationship that brings somebody back for years, and it protects a business better than any advertising. The same applies outside work: being part of somewhere makes life sturdier in ways that are hard to price. Social wealth goes unmeasured and is not imaginary.

Learn something about three people you see regularly and use it next time. A name, an order, how their week has gone. It takes no money at all.