To have faith one must have vision of the future and knowledge of the past.
To better reduce one's anxiety about today's circumstances one simply can look to previous relatable circumstances.
Whether you look at the Spanish Flu which took out 50 million people or to the Great Depression that brought the US economy to its knees a lot can be learned from these catastrophic events.
To look to such events is to understand the future. When we see the outcomes of these events we see how humanity afterwards learned and grew by great leaps and bounds.
And though we will all suffer in this great tragedy. To see what is to come after this cataclysmic event is to have vision and understanding.
In all great suffering comes great learning.
Be patient. Be kind to one another. Have faith. And see the end in the beginning.