So much of unhappiness, it seems to me, is due to nerves; and bad nerves are the result of having nothing to do, or doing a thing badly, unsuccessfully or incompetently. Of all the unhappy people in the world, the unhappiest are those who have not found something they want to do. True happiness comes to those who do their work well, followed by a refreshing period of rest. True happiness comes from the right amount of work for the day.