The first mirror

Three weeks. For twenty days you have been building a face. Today you look in a mirror.

We waited on purpose. The first month does not open with a personality test, because a mirror is only useful to someone who already has a face to see. You have twenty days of walking, writing, and small kept promises. That's a face.

We start with the one mirror psychologists mostly agree on. In the 1980s Paul Costa and Robert McCrae took decades of research on human traits and settled it into five broad dimensions that show up in every language and culture tested. Openness: curiosity and taste for the new. Conscientiousness: order, follow-through, and the ability to do what you planned when you no longer feel like it. Extraversion: where you get your energy and how much stimulation you want. Agreeableness: how much you bend toward others, and what saying no costs you. And neuroticism, or emotional stability if you prefer: how much weather you have inside.

It is not a type. Nobody is an O or a C. Everyone is somewhere on all five lines, and where you sit is stable for years and moves a little with age and with effort.

None of the five is good or bad. Low agreeableness runs companies and wins negotiations. High neuroticism notices the smoke first. What the Big Five gives you is a vocabulary that isn't a label, and a baseline you can retest in a year to see what a year of chambers moved. The research says conscientiousness and emotional stability are the two that move most with deliberate practice. Those are the two this month has been quietly training.

Take it honestly, not aspirationally. The point is the face in the mirror, not the one you'd like to see. Then bring your scores to your coach this week, because a mirror is best read with someone standing next to you.