Dan Brown’s writing career took off in 2003 when his novel “The Da Vinci Code” became an international bestseller. Now, he's one of the world's most popular writers — with 250 million books sold — and is passing on his best insights in a new MasterClass video series. But when he was starting out as a writer, Brown had trouble getting his books to sell. In order to achieve success, he had to choose between trusting his own taste and writing what he thought others wanted to read.