How to write persuasively is a somewhat measurable skill that we might be able to find information on. How to write "well" is vague and varies a lot from person to person, and the biggest lesson I've learned reading various writers' blogs is that different things work for different people.

The rationalist answer to "how to write well" is not "Do X" but "Here are a few things that successful authors do, try several them and be ready to constantly update your opinion on what works for you until you've found a process that works."

The only constants are going to be "write a lot" and "get feedback a lot."