Definition
Quantified Self is the discipline of measuring yourself on purpose — only metrics that change tonight’s behaviour count.
Origin
Movement (2007–). Gary Wolf and Kevin Kelly framed “Quantified Self” as a community for self-trackers using sensors and logs. The insight is old; the tooling exploded with wearables and apps.
Coaching fit. Many programs already track weekly commitments, voice logs, and calendar truth. This pillar names why measurement helps and when it becomes theatre.
Mechanism
A useful personal metric passes three tests:
- Lead — you can move it today (Lag vs Lead Measure).
- Honest — it resists gaming without changing the underlying behaviour.
- Legible — you can explain it in one sentence to yourself or a coach.
Failure mode: vanity metrics — numbers that flatter (steps, followers, inbox zero) without steering the Identity Gap.
Lag measures remain valuable as scoreboards after the week; they must not replace the lead.
Applications
Pair every dashboard score with a weekly commitment line or voice ritual.
Sources
Cite
- Wolf, G., & De Groot, M. (2011). The quantified self. In Talk at TED (Vol. 2011). https://www.ted.com/talks/gary_wolf_the_quantified_self
- Swan, M. (2013). The quantified self: Fundamental disruption in big…. Big Data, 1(2), 85–99