There we go again.. sigh, another rejection mail.. Do you know that feeling? Well, I'm here to tell you you are not alone. But what can you about it? Well, keep pushing until, eventually, that one special acceptance comes!
Stephen King's "Carrie" was rejected dozens of times. One of the publishers told him they "are not interested in science fiction which deals with negative utopias. They do not sell."
William Golding's "Lord of the Flies" was rejected by twenty publishers, depicted as "an absurd and uninteresting fantasy which [is] rubbish and dull."
John Grisham's "A Time to Kill" was rejected by a dozen publishers and sixteen agents, after which it became a building block to his best-selling career.
J.K. Rowling's "Harry Potter and the Philosopher's (later Sorceror's) Stone" was rejected by dozens of publishers.
The message? Put yourself out there and do not get discouraged; Persevere!