You have to resign yourself to the fact that you waste a lot of trees before you write anything you really like, and that's just the way it is. It's like learning an instrument, you've got to be prepared for hitting wrong notes occasionally, or quite a lot, cause I wrote an awful lot before I wrote anything I was really happy with. And read a lot. Reading really helps. Read anything you can get your hands on.
J. K. RowlingBut some part of him realized, even as he fought to break free from Lupin, that Sirius had never kept him waiting before. . . . Sirius had risked everything, always, to see Harry, to help him. . . . If Sirius was not reappearing out of that archway when Harry was yelling for him as though his life depended on it, the only possible explanation was that he could not come back. . . . That he really was . . .
J. K. Rowling