Work and purpose

Make your work to be in keeping with your purpose.

All I know of that is I can get very down when I am out of work for too long, survival will do that to a person, and I like to keep busy. But my work is overly stressful for how silly it is & sometimes I wonder if I shouldn't revise the work to fit some ethereal purpose. 

My purpose would like to be making a difference here while I am here, and I don't know how long that's gonna be. I also don't need or want to start over because this career path is so windy with serious droughts along the way. I just want self-sustainability, not to be miserable and to contribute something (to the chaos?).

Where does that begin & where will it end?