The best way for you to write is whatever best helps you write and finish the piece you're working on. And that can vary from writer to writer.
When I was editor of a weekly paper I wrote a family humor column and would sit down at a computer and do a month's worth at a time: four or five of them. (I already had my topics and angles in mind, and the column was very short.)
There was a columnist there who do his with a pen and yellow tablet, scratching out and rewriting, getting up in the middle of the night to consider a word or phrase. Neither of us could undertstand the other one's method. We agreed our own seemed best and the other . . . awful!