What's your advice for young writers, like myself, who are trying to write their own book in hopes that it will get published one day?
Try to get into the habit of writing every day. Freewrite to exercise your story muscles (write whatever comes to mind without filtering and without judging). Take creative writing workshops, and get feedback from other writers in your classes.
Read a lot of books that interest you. Write the stories that interest you regardless of what kind of stories your teacher or classmates prefer. If they love literary slice-of-life vignettes but you love epic adventures, write epic adventures. You’ll find your true audience later.