Hoping I remember correctly, the following story is about William Cowper, poet and hymn writer, who lived from 1731-1800 in England.

Cowper suffered fits of melancholy and frequent attacks of spiritual despair which led to two suicide attempts.

On one of these occasions during a time of deep despair and a dark night of the soul, on a foggy night he set out from his home in London with the intention of jumping into the Thames River to end his life.

He got hopelessly lost in the fog and wandered blind for some time. Eventually, lost and confused, he walked into a home to get out of the fog. And the home he walked into? It was his own.

He sat down and penned the words of the beloved hymn:

"God moves in a mysterious way
His wonders to perform;
He plants his footsteps in the sea,
And rides upon the storm."

Ye fearful saints, fresh courage take;
The clouds ye so much dread
Are big with mercy, and shall break
In blessings on your head."

- Dick Innes