A steady, strong, stable hand can steer a vessel through even the greatest turmoil. We saw this in Britain during the German Blitzkrieg. Rather than giving into fear, Britons went calmly about their daily business and the country carried on. In Taiwan, where the 2019 pneumoniavirus stays under the best containment in the world, people carry on and keep calm as they do.
It's hard to read clearly while holding a book with shaky hands. Your best bet is to notice fear on the rise. Sense it, smell it in yourself. When you feel the crawl of fear, just ignore it.