You make a good point, Emmanuel. I tell my writing students frequently, the only thing a writer really needs is something to say, something worth communicating.
I disagree with you, however, about not emulating the style of other writers. The writers we admire are our best teachers. When we try to borrow their voices, we tune our own, learning the principles that guide good self-expression. Learn to be as blunt and earthy as Hemingway, as evocative and precise as Fitzgerald, as friendly as Davies, as melodious as Whitman.
Finally, I admire your ability to write clearly in what does not appear to be your native tongue. But it is distracting to encounter constructions that a native speaker would never use, especially a contraction at the end of a clause. Example: "the things you write as a writer reflect who you’re and how much of a thinker you’re." Contractions are good for giving your prose an informal feeling, but this should be worded, ". . . reflect who you are and how much of a thinker you are." This construction appears several places, marring the flow of an otherwise fine essay.