why is the poem called psalm of life???

A psalm is an invocation to mankind to follow the path of the righteousness. Here, the speaker advises people to be heroes in their lives. He asks them to live in the present, without thinking about the past or the future.

A PSALM IS A SACRED SONG AND AN INVOCATION TO MANKIND TO FOLLOW THE PATH OF RIGHTEOUSNESS. SIMILARLY, THE POET ALSO ENCOURAGES US NOT TO WASTE OUR LIFE AND TEACHES S THE WAY TO LIVE A RESPECTFUL, MEANINGFUL AND , WORTHWHILE LIFE. THEREFORE, THE POEM IS A CALLED "A PSALM OF LIFE".