Reading this thread, I've realised that I have lots of bits of poetry that come to mind at one time or another. Dylan Thomas:
"Time held me green and dying
Though I sang in my chains like the sea."
And
"Do not go gentle into that good night
But rage, rage, against the dying of the light."
I'm very fond of the Sheenagh Pugh poem "Sometimes". I was just going to quote the final two lines, which are wonderful, but you have to read the whole thing to understand the context:
Sometimes things don't go, after all,
from bad to worse. Some years, muscadel
faces down frost; green thrives; the crops don't fail,
sometimes a man aims high, and all goes well.
A people sometimes will step back from war;
elect an honest man, decide they care
enough, that they can't leave some stranger poor.
Some men become what they were born for.
Sometimes our best efforts do not go
amiss, sometimes we do as we meant to.
The sun will sometimes melt a field of sorrow
that seemed hard frozen: may it happen for you.