The Cure of Melancholy and Over much Sorrow by Faith by Richard Baxter and published by Classics.
Richard Baxter writes on the best preservatives against melancholy and sorrow. He wrote with astonishing relevance about the complexities of dealing with Christians who seem to lack the joy of the Lord and who are unable to enjoy God. “Delighting in God, and in his word and ways,” he said, “is the ?ower and life of true religion. But these that I speak of can delight in nothing—neither God, nor in his word, nor any duty.”