Aspire.

Some years ago a writer not much older than I am now told me (not bitterly, but matter-of-factly) that it was a good thing that I, as a young writer, did not have to face the darkness that he faced every day, the knowledge that his best work was behind him. And another, in his eighties, told me that what kept him going every day was the knowledge that his best work was still out there, the great work that he would one day do.

I aspire to the condition of the second of my friends, I like the idea that one day I'll do something that really works, even if I fear that I've been saying the same things for over thirty years. As we get older, each thing we do, each thing we write reminds us of something else we've done. Events rhyme. Nothing quite happens for the first time anymore.

Neil Gaiman, from The View from the Cheap Seats: Selected Nonfiction

I don't agree, but Gaiman always makes me think.