I read a post this morning from someone I respect in the kidlit writing world. This person is feeling down at the moment. With today's publishing, it's natural for writers to feel this way once in a while. But there comes the time when you have to lift yourself up (and others). Like the little engine who thought he could. And he did. Simple as that.
Remember to pat yourself on the back for the smaller accomplishments, too. A kind rejection letter, a request for additional pages, tweaks / changes. They're all successes. Smile. :)
Whatever the outcome is (for my big moment), I'll keep going. It's what what I do. It's what all writers do.
So folks, remember the 3 Keeps: Keep your chins up. Keep querying / submitting. Keep writing.