“Writer’s block is a condition, primarily associated with writing, in which an author loses the ability to produce new work. The condition ranges from difficulty in coming up with original ideas to more extreme examples in which some “blocked” writers have been unable to work for years, and some have even abandoned their supposed lifelong careers. Throughout history, writer’s block has been a documented problem. Professionals who have struggled with the affliction include author F. Scott Fitzgerald and pop culture cartoonist Charles M. Schulz. Writer’s block can manifest when a writer views their work as inferior or unsuitable. The research concentrating on this topic abounded in the late 1970s and 1980s. During this time, researchers were influenced by the Process and Post-Process movements, and therefore focused specifically on the writer’s processes. The condition was first described in 1947 by psychoanalyst Edmund Bergler.”
Thanks for filling in the gaps Wikipedia.