I believe that a writer learns from every story he writes, and when you try different things, you learn different lessons. Working with other writers, as in Hollywood or in a shared world series, will also strengthen your skills, by exposing you to new ways of seeing the work, and different approaches to certain creative challenges.
George R. R. MartinBran thought about it. 'Can a man still be brave if he's afraid?' 'That is the only time a man can be brave,' his father told him.
George R. R. MartinIf you would wed, wed. If not, take your pleasure where you find it. There's little enough of it in this world." - Oberyn
George R. R. Martin