Contrary to all those times you've heard a writer confess at a reading that he writes fiction because he is a pathological liar, fiction writing is all about telling the truth.
I'm no online whiz, but I'm not a Luddite, either. I love that we have these laptops and tablets and smart phones; they're awesome and convenient and all that. It's more about maintaining balance. Technology should always be a predicate of the true subject: our individual humanity, our examined lives.
Write as precisely and as lucidly and as richly as you can about what you find truly mysterious and irreducible about human experience, and not obscurely about what will prove to be received opinion or cliche once the reader figures out your stylistic conceit. There's all the difference in the world between mystery and mystification.
I worry that if whatever pops into your head at any instant immediately goes online, you lose the crucial time for your thoughts to simmer and evolve and build up nuance, depth and empathy.
If you want to be a writer, you write. Everybody wants to get published. You gotta play your long game.