This is why you’re never satisfied with your accomplishments, according to science

It’s a pesky little trait scientists call hedonic adaptation. And while it helps you stay hungry and survive, it can also be a recipe for burnout if you’re not careful. Remember that big thing you achieved three months ago? Neither do I. The half-life on happiness feels awfully short these days, and as the years go on the ambition we had in our twenties becomes increasingly hard to channel. You set goals and chase after them…but what about all that time you spend in the Upside-Down...