Advice to Poets from Wislawa Szymborska

"How to (and How Not to) Write Poetry"
Real letters to real questions from poets:

Excerpt:

To T.W., Krakow: “In school no time is spent, alas, on the aesthetic analysis of literary works. Central themes are stressed along with their historical context. Such knowledge is of course crucial, but it will not suffice for anyone wishing to become a good, independent reader, let alone for someone with creative ambitions. Our young correspondents are often shocked that their poem about rebuilding postwar Warsaw or the tragedy of Vietnam might not be good. They’re convinced that honorable intentions preempt form. But if you want to become a decent cobbler, it’s not enough to enthuse over human feet. You have to know your leather, your tools, pick the right pattern, and so forth. . . . It holds true for artistic creation too.” 

http://www.poetryfoundation.org/article/178592