What is a summary of "New Year Letter" by W.H. Auden?

"New Year Letter" by W.H. Auden can be viewed as a multimedia collage in the form of poetry. The poem doesn't seem to have a central thesis or theme, although the poem is dedicated to Elizabeth Mayer. Besides a few passages referencing Mayer, the poem veers off into various subjects, including philosophical inquiries into the nature of the poetic arts and argues why poetry is important to the humanities.
The poem also depicts an idyllic version of the past in some stanzas. Auden was experimenting with a stream of consciousness style of poetry, and the fragmented train of thought found in "New Year Letter" is evidence of this.
This style of poetry would go on to influence post-modern poets such as Allen Ginsburg, especially with his epic poem about the American subculture, Howl. The poem's style and intent is also hinted in the title, with the new year symbolizing the passage of time, which is a theme that is partially touched upon in the poem.