A very frequent source of fatigue is love of excitement. If a man could spend his leisure in sleep, he would keep fit, but his working hours are dreary, and he feels the need of pleasure during his hours of freedom. The trouble is that the pleasures which are easiest to obtain and most superficially attractive are mostly of a sort to wear out the nerves.Desire for excitement, when it goes beyond a point, is a sign either of a twisted disposition or of some instinctive dissatisfaction.
Source: The Conquest of Happiness, 1930, chap.5: Fatigue<
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