true happiness is often found in little things that are way beyond to be bought using money. A smile from a stranger, a giggle from a new born, a hug from your best friend or a kiss from your lover. You can buy none of these and they still make you happy much more than money ever can.
You can use the money to buy things that fulfill physical needs. But you can not use money to buy things that have mental needs.
You can use the money to buy things that fulfill physical needs. But you can not use money to buy things that have mental needs. True happiness occurs when your mind peaceful.