Things that bring you happiness can be said to have intrinsic value. This means that they are valuable to you, but do not necessarily represent a standard value for happiness.
Money, on the other hand, has extrinsic value. This means that others understand that money also has value in the real world, and will (generally) accept it.
For example, you may find pleasure in the smell of lavender but someone else may find it less appealing. Each of you places a different value on her fragrance.
You literally cannot buy happiness in a store. But when money is used in certain ways, such as buying things that bring you happiness, you can use it to add intrinsic value to your life.
So if the smell of lavender brings you joy, you can use money to buy it in different forms and keep it in your home or office. This, in turn, can increase your happiness. In this example, you are using money to bring you happiness indirectly.
This can be applied in many situations. But while the things you buy may bring short-term happiness, they may not always lead to long-term or lasting happiness.
