In 2007, former Harvard lecturer Tal Ben-Shahar gave a name to a widespread disappointment: the arrival fallacy. It is the mistaken belief that reaching a major goal will deliver lasting happiness. The reality is often flatter and quieter.

Two scientific concepts explain the letdown. Research on affective forecasting by Timothy Wilson and Daniel Gilbert shows an “impact bias”-people consistently overestimate how intensely and how long a positive event will make them feel good. Meanwhile, psychologist Kent Berridge’s work distinguishes the brain’s “wanting” system, driven by dopamine, from its “liking” system. The chase is neurochemically more powerful than the arrival.

This pattern shows up in mundane moments too. A long-anticipated vacation can feel better in the planning than in the sitting on the sand. The texture of wanting often outweighs the experience of having.

Ben-Shahar advises taking pleasure in the climb rather than the summit. Even knowing the trap, however, does not always stop people from walking into it. The mind continually lines up the next goal, believing this one will finally feel like enough.