Brandon Sanderson: 'After a dozen rejected novels, you think maybe this isn’t for you'

Before the bestsellers, he spent a decade being told to be 'more like George R.R. Martin'. Now, the fantasy author has an army of devoted fans and a record-making Kickstarter which is now the most successful publishing project of all time, raising over $5 million. How did he break through? Talking to the Guardian's Alison Flood, he explores.