One of the big breakthroughs, I think for me, was reading Robert A. Heinlein's four rules of writing, one of which was, 'You must finish what you write.' I never had any problem with the first one, 'You must write' - I was writing since I was a kid. But I never finished what writing.

Writing is hard. I mean, I sit there and work at it.

Boy, there are days where I get up and say 'Where the hell did my talent go? Look at this crap that I'm producing here. This is terrible. Look, I wrote this yesterday. I hate this, I hate this.'

George R. R. Martin Quotes