In talents and capacity, in judgment and inclination. You cannot master yourself unless you know yourself. There are mirrors for the face but none for the mind. Let careful thought about yourself serve as a substitute.
Baltasar Gracián, 1647 (tr. Joseph Jacobs, 1892)
Every other maxim in this book assumes this one: you cannot deploy strengths you have not located, guard flaws you have not admitted, or correct for moods you have not mapped. Yet self-knowledge is the least resourced project in most lives, running entirely on flattery received, criticism resented, and occasional 2 a.m. clarity. The prescription is the substitute mirror: deliberate, scheduled thought about yourself, treated with the seriousness of an audit. What am I actually good at, on evidence? Where does my judgment bend? What do I want, underneath the wanting I perform? The examined answers change every deployment decision that follows.
Practice
- Write the annual letter to yourself: honest paragraphs on capacity, judgment, inclination, and what this year proved about each. File and compare.
- Collect external data points on the blind spots: the question "what do I not see about myself?" asked of two safe people yields more than a year of introspection.
- Test the self-image against the calendar and the bank statement; what you actually spend time and money on is testimony, and it does not flatter.
Use this when
- Use this before the big deployments: role changes, the second act, any plan that assumes you are someone specific.
- Use it after surprises about yourself, the loss of temper, the unexpected envy; surprise means the map is wrong somewhere.
Ignore this when
- Don't let self-examination become self-absorption; the mirror is for checking course, not for residence (maxim 69 already limits the weather-watching).
- Don't treat any self-verdict as final; the file stays open, because the subject keeps changing.
A picture of it
At forty-six he described himself as he had at thirty: a field man, wasted in reviews, happiest on site. His own last three years of diaries, read honestly one December, testified otherwise: the site visits drained him now, the mentoring pages glowed, the best entries were all about juniors he had built. The self-image was sixteen years out of date, and it had nearly made him decline the training-academy role he now calls the best of his career. The mirror was in the drawer the whole time. It only needed reading.
Update the file you keep on yourself. You are its least reliable witness and its only author.