"A Psalm of Life" is a poem written by American writer Henry Wadsworth Longfellow, often subtitled "What the Heart of the Young Man Said to the Psalmist". Longfellow wrote the poem not long after the death of his first wife and while thinking about how to make the best of life. It was first published anonymously in 1838 before being included in a collection of Longfellow's poems the next year. Its inspirational message has made it one of Longfellow's most famous poems. Source: Wikipedia (en)