There are actually two separate issues here. The first is whether (as ancient philosophers and Nietzsche assume) only the privileged elite can live a worthwhile life. The second is whether it's possible to fulfill the roles of both serious artist and upstanding citizen. It seems to me that philosophy can dissect both questions, by delineating clearly the anatomy of the good life and the structural conditions of the roles.
The whole genius of an author consists in describing well, and delineating character well. Homer, Plato, Virgil, Horace only excel other writers by their expressions and images; we must indicate what is true if we mean to write naturally, forcibly and delicately.
Self-discipline is the No. 1 delineating factor between the rich, the middle class and the poor.
I never for a day gave up listening to the songs of our birds, or watching their peculiar habits, or delineating them in the best way I could.