If ‘writing is thinking’ than I believe that what we write must necessarily flow from our subconscious.
In my opinion, this by far is the most effective strategy that distinguishes good from great writers. People often make the mistake of assuming that a wry, clinically detached style is most appropriate for non fiction writing. Not necessarily. In fact, keeping a tight leash on your emotions and not allowing your subconscious to spill into your writing can be the greatest impediment to good writing.
In my opinion and in my experience of reading good writers, a good writer must adopt the premise: my subconscious, right or wrong. Writing from the gut is a sure recipe for a great piece of writing.
In an interview with the Globe in Cambridge, Nobel laureate Mexican poet Octavio Paz, quoted French poet Baudelaire to describe his view of literary and political criticism: "If a writer's criticism is to be good, it must be passionate. Any criticism must be partial. Impartial criticism is for academics."
No doubt Paz was hailed by the Swedish Academy "for impassioned writing with wide horizons, characterized by sensuous intelligence and humanistic integrity." (Press release, the Nobel Prize in Literature, 1990, http://www.nobel.se/literature/laureates/1990/)