This is the true joy in life, the being used for a purpose recognized by yourself as a mighty one; the being thoroughly worn out before you are thrown on the scrap heap; the being a force of nature instead of a feverish selfish little clod of ailments and grievances complaining that the world will not devote itself to making you happy.
George Bernard Shaw

Related articles:
7 Simple Questions to Help You Determine Your Life Purpose
What Do You Really and Truly Love? Find Out by Creating a Word Collage
5 Steps to Surrender to Your Life Purpose
Find Your Life Purpose in under One Hour
What a terrific quote! I hadn't heard it before this. I think I'll hang on to it and read it again on those days when I'm feeling like a feverish selfish little clod--we all have them, right?.
I certainly do. :-)