I think the concept of the hedonic treadmill explains this pretty well: https://en.wikipedia.org/wiki/Hedonic_treadmill https://en.wikipedia.org/wiki/Hedonic_t

I think the concept of the hedonic treadmill explains this pretty well: https://en.wikipedia.org/wiki/Hedonic_treadmill https://en.wikipedia.org/wiki/Hedonic_treadmill We have a strong tendency to revert to our internal happiness set point, in the face of success or failure. So the trick is to learn to change that set point, which mostly doesn’t depend on things outside ourselves.