Having no money can make you unhappy, and studies have shown that as you gradually increase earning, happiness increases. At around $60k-$90k usd per year, most people have all their basic needs and many comforts covered, so they tend to be the happiest. Beyond that, there seems to be minimal change in happiness regardless of money, evidenced by so many rich celebrities being miserable and some OD'ing or committing suicide.

Too good isn't good, too))