“The person who says he knows what he thinks but cannot express it usually does not know what he thinks.” -Mortimer Adler
“Writing is the process by which you realize that you do not understand what you are talking about. Of course, you can learn a lot about something without writing about it. However, writing about something complicated and hard to pin down acts as a test to see how well you understand it. When we approach our work as a stranger, we often discover how something that seems so simple in our heads is explained entirely wrong.” -Shane Parrish
Before you tell it, write it. Draft an email or blog post or even an essay. You don’t have to show it to anyone. This is just for your own clarity.
By doing so, you will figure out what you’re really trying to say, why you’re saying it and how best to communicate it.
You might be surprised by where the pen takes you. Don’t fight it. Let your subconscious take over and trust it to take you wherever it takes you.
P.S. – This excellent FS post.