One of those days, and a 'Writer' moment

This weekend was a long one for me--I am a teacher and staff member of a student orchestra, and this weekend was our Christmas concert, so Friday was spent plowing through dress rehearsals, and Saturday was the big day! It went off really well, all things considered (practicing and performing in a strange church building we're not used to, and trying to explain the extremely complex dress code "Black and white" to three hundred kids). I also got to be in the alumni orchestra for the first time this year, so that was a big blessing and ton of fun for me! I didn't realize how much I've missed being in orchestra.
The 'Writer' moment came shortly after I dragged myself into the house at 8:30 Saturday night, cold, weary, and convinced that high-heeled dress shoes were originally invented as slow-onset torture devices. There was a letter in the mail for me... oddly, addressed in my own handwriting with no return address. (?) I quickly thought through everything I had submitted, sent away for, or requested during the last couple of months, but came up with nothing that matched this. I opened the envelope to find three of my poems that I had sent away to a magazine four years ago and had long since forgotten about, along with a polite little note thanking me for my submission, but regretting to inform me that they couldn't use it.
And no wonder! The poems that, four years ago, I considered fabulous were downright embarrassing to see printed up so professionally, a painful reminder that I had actually had the gall to submit them. The whole situation was too ridiculous for me to feel very badly about the rejection--after rereading those poems, I knew I deserved it! It was a good learning moment, though, a good reminder of the progress I've made during the last four years as a writer.
How about you? What is a recent Writer Moment you've had, and what have you learned from it?