Panic is a real emotion whether based real or imagined events. Look at the pandemic. There is a surge of the virus among younger healthier people while at the same time the death rate is plummeting. What do people focus on? The rise in cases. But they should be focused on the death rate which fell from almost 6% to under 5%.
This same illogical reaction occurs in writers. It can be about their published book, lack of sales, royalties, and more. Then you have the as of yet unpublished book. It can be excessive worry over the story itself transforming itself into writer’s bloc.