The fact you can’t please all the people all the time is intuitively obvious to authors. Some people may love your book while others hate it. Nothing is more demoralizing than a bad review. To renew your confidence, check the reviews on some of the classics. Somehow it does your heart good to see Ernest Hemingway get 2 stars.
Writing styles change over the years. What was considered a good story 50 or 100 years ago may not be well-received in today’s market. Sometimes originality works and others it doesn’t. Being in-tune with current trends can help assure your book’s success. Who would have guessed twenty years ago how popular vampires and zombies would become?