This is a bit of a short guide, and it's required to be short for one simple reason.

There's a lot of advice there on the internet. A lot of it is correct, but it comes with an implicit contextual limitation. The people like Uncle Bob Martin, Johnathan Blow, and perhaps Casey Muratori, are all referring to programmers that have intrinsically different levels of experience.

This is a rather long-winded piece of wisdom that I have picked up from multiple sources. It is meant largely for a few people in my immediate audience, whom I know and love and have every intention of helping along the way.

I have not learned this overnight. Errare humanum est. While I do not presume to know more than the other person, there are some strategies that I have found to be useful. This article lists but a few of them.