If one does not perform duty to one whom the duty is due, one becomes a thief of the duty.
Avesta, Videvidad 4.1
Your work is to discover your work and then with all your heart to give yourself to it. That's the mark of a true professional.
Gautama Buddha *
Doing is very good, but that comes from thinking...fill the brain, therefore, with high thoughts, highest, ideals; place them day and night before you; and out of that will come great work.
Hard work is painful when life is devoid of purpose. But when you live for something greater than yourself and the gratification of your own ego, then hard work becomes a labour of love.