Hard work is a noble deed. Hard work can mean someone doing something in earnest to get what he wants.
Goals to be achieved from hard work can be various. Can with the aim to seek fortune, study, work, career, and others
If we look around in our daily lives, so much we see people who work very hard day and night in order to earn fortune. More people are seen as dedicating their lives just to seek the welfare of their lives in the world, to forget the worship and 'investment' for the next life later.