I love this bit here:

>The subheading under this rule would be: Try your best to be right, but don’t worry when you’re wrong. Repeatedly. If you feel uncomfortable, or like an impostor, good. You’re pushing yourself. Don’t assume you know everything, but try your best anyway, and let the internet correct you when you are inevitably wrong. Wear your noobyness on your sleeve.

It requires an ongoing practice of humility _and_ extending grace to yourself for your own mistakes or misunderstandings (on the basis of "everyone makes mistakes and has to learn"), which can be a good starting point for showing that same grace to others.