Must you write complete sentences each time, every time? Perish the thought. If your work consists only of fragments and floating clauses, the Grammar Police aren't going to come and take you away. Even William Strunk, that Mussolini of rhetoric, recognized the delicious pliability of language. "It is an old observation," he writes, "that the best writers sometimes disregard the rules of rhetoric." Yet he goes on to add this thought, which I urge you to consider: "Unless he is certain of doing well, [the writer] will probably do best to follow the rules."
Stephen KingWhen you're five and you hurt, you make a big noise in the world. At ten you whimper. But by the time you make fifteen you begin to eat the poisoned apples that grow on your own inner tree of pain.
Stephen King