Getting anywhere near 'mastering' content marketing, is a tough ask for anyone, though this blog covers some useful ground.
There's no doubt that writing which makes the reader's mind conjure vivid images can be very powerful and influential, and there is a whole new skill to learn to learn for people wanting to go down this route.
I've spent a lot of time over the last year learning different writing techniques for use in various scenarios online. You can be taught them, but you have to do a lot of practice to get good at it.
There's a lot of psychology involved in getting people to take action as a result of your writing and I would recommend finding courses or reading books that can help you.
If you want to use content writing to help increase your sales for example, I would highly recommend Russell Brunson's book Dot Com Secrets. It's not exclusively about writing content, but you will learn a great deal about how to do it well. I'd go so far as to say that it's the best book I've ever read on the subject.
On the Internet we’re overwhelmed with visual detail: perfectly cropped and filtered photos, sunsets and selfies, and products galore. In a sea of visual stimulation, authentic stories are increasingly valuable. Every sentence matters. When you work with an implicit story structure, the readers experience your message through their own memories.