"When any fit of gloominess, or perversion of mind, lays hold upon you, make it a rule not to publish it by complaints, but exert your whole care to hide it; by endeavouring to hide it; you will dry it away. Be always busy."

Source: James Boswell, Samuel Johnson, Edmond Malone (1824). “The life of Samuel Johnson, LL. D., comprehending an account of his studies, and numerous works, in chronological order: a series of his epistolary correspondence and conversations with many eminent persons; and various original pieces of his composition, never before published; the whole exhibiting a view of literature and literary men in Great Britain, for near half a century during which he flourished”, p.352