The two books represent one of the high points of English prose during the period of the early Stuarts. Holy Living is designed to instruct the reader in living a virtuous life, increasing personal piety, and avoiding temptations. Holy Dying is meant to instruct the reader in the "means and instruments" of preparing for a blessed death. Each book contains discussions of theology, moral instruction, often prefaced as "The Consideration reduc'd to practise," and model prayers requesting divine assistance in achieving them.
Holy Living is the less interesting but more useful of the two books, being largely concerned with questions of practical morality, of a type that have hardly changed from the 1600s to today. The companion volume, Holy Dying, is more interesting from a literary point of view. It was occasioned by the death of the wife of Taylor's patron and employer, the Earl of Carbery. In a book that is half Christian instruction and half memorial sermon, Taylor's gift for poetic prose is exercised to its fullest effect. Coupled with the 17th century cult of melancholia, the result is prose that is simultaneously stately and rapturous, "half in love with easeful death," and reads like prose poetry:
Taylor's work was much admired by John Wesley, the founder of Methodism, for its devotional quality; and by Samuel Taylor Coleridge, Thomas de Quincey, and Edmund Gosse for its literary qualities.
Holy Living and Holy Dying: http://www.ccel.org/t/taylor/