Most of us are “living the dream”—living, that is, the dream we once had for ourselves. We might be married to the person we once dreamed of marrying, have the children and job we once dreamed of having, and own the car we once dreamed of buying. But thanks to hedonic adaptation, as soon as we find ourselves living the life of our dreams, we start taking that life for granted. Instead of spending our days enjoying our good fortune, we spend them forming and pursuing new, grander dreams for ourselves. As a result, we are never satisfied with our life. Negative visualization can help us avoid this fate.
from “A Guide to the Good Life: The Ancient Art of Stoic Joy“, by William B. Irvine