Hey! I have been there... and still get the rejection blues from time to time.
The following homily is for all those who have been rejected - or may be in the future.
10 years ago, I had this "great" idea for a series of 3-D children's books. I pitched it to National Geographic. They said, "no thank you."
I never give up. Two weeks later I signed a contract with the Nature Company for six books. Those six 3-D books led to two more 3-D books and another children's book.
Out of all my books, the 3-D children's books were my best sellers - because the audience for children's books is much greater than for how-to digital photography books.
The books are out of print, sorry.
So when you get rejected, never give up. Okay. Promise.
See the light,
Rick