A Sonnet about thinking you're going to accomplish something, and then not

A shirt I'll never wear was in the mail --
With "NaNoWriMo Winner" firm and stout.
A badge of my propensity to fail
Since once again my efforts petered out.

But back to sender went the unearned ware!
I'd put my old where new address should be;
Perhaps it should have been addressed in care
Of Momus, Roman god of irony.

The NaNoWriMo people are the best;
They fixed my flub and sent it out once more.
I should have had the courage and confessed
It's going in the bottom of a drawer.

But now I have, when all the drama's done,
My plot for NaNoWriMo '21!
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For those not familiar with National Novel Writing Month, here's their site: nanowrimo.org/