There are so many..so here are my top 10 1 The days when an idea flows...and actually makes sense 2. When you look at your work and you are pleased. 3 When that first copy arrives in the post. 4 When you sell the first copy. 5 When someone somewhere kindly takes the time to review your work. 6 When you see that someone has added your book to their reading list. 7. When you go somewhere and you describe yourself as a writer. 8. When people congratulate you on your work. 9. When you go to Amazon Goodread and the like and wow.. your book is there 10. When you get an idea for your next book.