WE ADAPT TO ALMOST EVERYTHING WE EXPERIENCE WITH ANY regularity. When life is hard, adaptation enables us to avoid the full brunt of the hardship. But when life is good, adaptation puts us on a “hedonic treadmill,” robbing us of the full measure of satisfaction we expect from each positive experience. We can’t prevent adaptation. What we can do is develop realistic expectations about how experiences change with time. Our challenge is to remember that the high-quality sound system, the luxury car, and the ten-thousand-square-foot house won’t keep providing the pleasure they give when we first
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