Is your Artistic Self in need of a shot of Inspiration? Then check out this post on Dealing With Rejection For Cartoonists and Artists which can be found on Bill Abbott's Humorous Art Blog.
I especially like Bill's Fire & Forget Strategy. Here's the details of the strategy in his own words:
"One of the methods I use to keep my head screwed on straight with regard to rejection, is a term I’ve borrowed from the military, Fire and Forget. I fire off my submissions, forget them and move straight into creating the best work for submitting again in the next round. When rejection comes as it always does, I seek information on how to improve or when to resubmit. With Fire and Forget, I’m too busy setting up for tomorrow to worry about what I did yesterday, and how others reacted to it."
Make sure you read Bill's entire post so that you're ready to positively deal with any artistic rejection in the future. BTW, you'll also enjoy his very funny cartoons.