Usually, the hard way. I've worked on so many poor-quality projects. I've had so many heated conversations trying to teach people that there are no such things

Usually, the hard way. I've worked on so many poor-quality projects. I've had so many heated conversations trying to teach people that there are no such things as rules in SE and it's important to _know when to bend/break the rules_. Rigorously following rules doesn't mean high quality, automatically. Some things simply don't exist in the little world you're building. Translations, for example, usually live outside of any layered cake you are making. If you write a string that will be shown to a user deep down in your code, it needs to be marked for translation and translated. If you try to layer it ... gods help anyone who comes along to change that switch statement. There are lots of other cross-cutting concerns that people try to put into a box because of "rules" that don't belong in a box. That's usually where your quality starts to plummet.