Is this how writers block starts?

So, I'm a terrible blogger. Ok, not terrible, just INCREDIBLY slow. I'm averaging one post a month. Ewww..... I mean, I guess I could just make up some short little post everyday where I don't really say anything, but that's not why I'm here. I'm doing this blog because I want to learn how to write. I want to learn to write well. I've been studying travel writing for a while now and feel like it's time for me to give it a shot. But I'm just so SLOOOOOOOOOOOOWWWWW.... I don't know any other writers, but seriously, how long should it take to write a five paragraph story. Certainly not a whole month.

I've been reading lots of travel writing lately. I finally decided to knuckle down and read some "classic" travel writing, namely The Innocents Abroad by Mark Twain and On The Road by Jack Kerouac. Now, it's Mark Twain and Jack Kerouac, so of course they're going to be brilliant, but as I'm reading I keep wondering how long it took them to come up with passages like this one from The Innocents

"The island in sight was Flores. It seemed only a mountain of mud standing up out of the dull mists of the sea. But as we bore down upon it, the sun came out and made it a beautiful picture - a mass of green farms and meadows that swelled up to a height of fifteen hundred feet, and mingled its upper outlines with the clouds. It was ribbed with sharp steep ridges, and cloven with narrow canons, and here and there on the heights, rocky upheavals shaped themselves into mimic battlements and castles; and out of rifted clouds came broad shafts of sunlight that painted summit, and slope, and glen, with bands of fire, and left belts of sombre shade between. It was the aurora borealis of the frozen pole exiled to a summer land!"

*sigh*Did Twain sit for hours on end pouring over that paragraph, writing, rewriting, editing, and rearranging, as I would have had too? Or was he simply so brilliant that he barely had to think about it? Just write what was in his mind, make a few small changes, then send it off to the publisher. Either way, I have prose envy.