The five-minute favour

Offer help that costs you five minutes but saves someone else hours.

Why it works

The value of a give is asymmetric: small acts of expertise cost the giver almost nothing but can remove a major obstacle for the recipient. This asymmetry means high-value giving is possible without depleting time. The unexpectedness of a quick, unsolicited help is also disproportionately memorable, which builds reputation more efficiently than large, expected gestures.

How to do it

1. When someone shares a problem or question, ask yourself: can I help in five minutes or less?
2. If yes, do it immediately — an introduction, a quick reference, a pointer to the right person.
3. If no, say so clearly rather than over-promising and under-delivering.
4. Build a habit of scanning your week for open five-minute favour opportunities.

Evidence

Grant’s research found that givers who set boundaries on how they help (limiting big time commitments while doing many small ones) sustained higher performance than those who said yes to everything. (observational)

Grant’s studies are largely survey-based and correlational; the causal mechanism — that five-minute favours specifically build reputation — is a plausible inference rather than a directly isolated finding.

Sources

• Grant (2013), Give and Take: A Revolutionary Approach to Success

Common mistake

Waiting for a large, perfect way to help rather than doing many small impactful things — this leads to giving paralysis.