" It is the worker who is attached to results that grumbles about the nature of the duty which has fallen to his lot; to the unattached worker all duties are equally good, and form efficient instruments with which selfishness and sensuality may be killed, and the freedom of the soul secured. We are all apt to think too highly of ourselves. Our duties are determined by our deserts to a much larger extent than we are willing to grant. Competition rouses envy, and it kills the kindliness of the heart. To the grumbler all duties are distasteful; nothing will ever satisfy him, and his whole life is doomed to prove a failure. Let us work on, doing as we go whatever happens to be our duty, and being ever ready to put our shoulders to the wheel. Then surely shall we see the Light! "

― Vivekananda , Karma Yoga: the Yoga of Action