Making someone happy just for the sake of it can be one of the most rewarding feelings in this world. Brightening up a personâs day, whether the person is your best friend or your waiter, can bring you good karma and will make your day brighter in turn.aking someone happy just for the sake of it can be one of the most rewarding feelings in this world. Brightening up a personâs day, whether the person is your best friend or your waiter, can bring you good karma and will make your day brighter in turn.