"It is not the place, nor the condition, but the mind alone what it compares its situation to that can make anyone happy or miserable. Compare it to something better - result envy, frustration and sadness. Compare it to something worse - relief, gratitude and happiness."

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What I want you to understand, is the full evil of those who claim to have become convinced that this earth, by its nature, is a realm of malevolence where the good has no chance to win. Let them check their premises. Let them check their standards of value. Let them check - before they grant themselves the unspeakable license of evil-as-necessity - whether they know what is the good and what are the conditions it requires.

— Ayn Rand