What do all your favorite authors have in common? What do they have that makes their books feel so special to you?
They have voices. I can pick up anything written by Cassandra Clare, or Nicholas Sparks and without looking at anything but the writing I can tell you who the author is.
When I think of each and every one of my favorite books I know they all have that in common. The way the author strings together their words, the way they describe their characters, how they approach action or romance, it's all unique to them and their own personal writing style.
I like to think of it as a writers fingerprint. When you first start writing, all you have is that lonely arch along the top of your finger. It's a start, but nothing to identify you by. Then a few months or a year later- maybe after you've got a terrible finished manuscript, and several dozen amazing reads under your belt making you feel completely unworthy- that lonely arch becomes a carefully curved pattern of arches slowly wrapping its way around in a distinctive pattern.
The longer you write, and the more books you read, the closer you are to finding what works for you as a writer. You get to see how you can attack revisions without pulling your hair out. You find a way to describe a person memorably, so you don't feel the need to repeat how they look in each chapter so your readers remember. You see a pattern of words you like to use, and comma placement, and whether you prefer the semi-colon or the dash. (I'm a dash sort of person myself- in case you haven't noticed.)
And before you know it you have your own writers fingerprint. Your words are woven together so uniquely that they're discernable from everyone else. As unique as that little pattern on the ends of your fingers.
So next time you're reading something that just makes you feel like you'll never get where they are, or someone small minded tells you that you have a better chance of getting struck by lightening than being published in this market, look at your fingers. At one point they weren't all that unique either. The longer you write, and the more effort you put into it the closer you are to finding that thing, whatever it is, that makes your stories fly off the page and grab someone around the heartstrings like a vice.
And remember, the chances of you being struck by lightening are never going to change, but the chances of you being published improve with every word you write.