How do you know how good you are at something?

There seem to be two extremes:

* Impostor syndrome (thinking you're terrible at it when actually you're OK or even good)
* Dunning-Kruger syndrome (thinking you're great at it when you're terrible at it)

Obviously this is an over-simplification.

People in the latter category get a lot of hate, but I actually think it's a much better place to be. [Confidence is key to success](http://ashleynh.me/on-confidence/).

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Proposed rules for self-calibration:

1. Notice when you fail and try to understand why and how you could improve.
2. Don't make excuses.
3. "I am a terrible person" is not a valid root cause.