The golden rule that many writers follow.
Text – or content in general – is like cheese: it needs to mature and rest before it sees the light of day.
This rule is not always possible to apply, but if you can - don't edit the content immediately after writing it. Set it aside for a while - ideally 24 hours or overnight, and look at it with fresh eyes the next day.
The scheme that works best for me:
- Reading and editing of the written text after 24 hours
- Feedback and corrections
- Second reading after 12 hours
- Final proofreading before publication
Such a break can also be a nice thought exercise. Look at your content from a year or two ago - you will definitely notice mistakes that you would not make today.