The young author generally writes because he wants to write, either for money, from vanity, or in mere weariness of empty hours and anxiety to astonish his relations. This is well, he who would fail cannot begin better than by having nothing to say. The less you observe, the less you reflect, the less you put yourself in the paths of adventure and experience, the less you will have to say, and the more impossible will it be to read your work. Never notice people's manner, conduct, nor even dress, in real life. Walk through the world with your eyes and ears closed, and embody the negative results in a story or a poem.
“I do not think altogether the worse of a book for having survived the author a generation or two. I have more confidence in the dead than the living.” — Hazlitt
17 May 2012
How to Fail in Literature
Andrew Lang, How to Fail in Literature (London: Field & Tuer, 1890), pp. 46-7: