'I'm not myself here'

"Ice petals on the trees.
The peppery black sparrows pour across
the frozen lawn.
The wind waits patiently behind the barn.

Though I’m not myself here, that’s okay.
I’ve lost my name,
my last address, the problem
that has kept me up all night this week in winter.''

-- From "Below Zero,'' by Jay Parini, a well known poet and professor at Middlebury College, in Vermont.