[as a poet] . . you’re going to write that which most concerns you, which most quickens your mind, and then to turn those subjects over with as resourceful and complex a touch as possible. I am endlessly irritated by the reading of my poems as autobiography. I draw on the materials my life has given me, but what interests me isn’t that they happen to me, what interests me is that they seem, as I look around, paradigmatic. We’re all born mortal. We have to contend with the idea of mortality. We all, at some point, love, with the risks involved, the vulnerabilities involved, the disappointments and great thrills of passion. This is common human experience, so what you use is the self as a laboratory, in which to practice, master, what seem to you central human dilemmas.
Louise Glück in interview with Grace Cavalieri (from here)