Asleep in lap of legends old. - John Keats

Sweet are the pleasures that to verse belong,
And doubly sweet a brotherhood in song.

Oh what can ail thee, knight-at-arms,
Alone and palely loitering?

I still don't know how to work out a poem.

A poem needs understanding through the senses. The point of diving into a lake is not immediately to swim to the shore, but to be in the lake, to luxuriate in the sensation of water. You do not work the lake out, it is an experience beyond thought. Poetry soothes and emboldens the soul to accept the mystery.