Sometimes it's very hard to write anything at all. Sometimes life intervenes, kicking the carefully-ordered piles of plans onto the floor.
Sometimes Brother Death comes calling and gathers someone close into his dark arms, sometimes Sister Sickness visits (and visits and visits) someone close, demanding more and more cups of tea and nursing help, and sometimes that crazy great-uncle in the attic, The-End-Of-The-World-As-We-Know-It starts hammering the ceiling with his cane. And sometimes all those things happen at the same time.
Then it's hard to write.