Primary Source
From a 1921 interview with Robert Frost:
None of my relatives wanted me to write. Grandfather wanted me to be a lawyer. My mother was very fond of poetry, and, while she never said so, I always felt that underneath she wanted me to write. So I entered college. While my marks were always good, I somehow felt that I was wasting time, and so left college. Later I tried it again, but eventually had the same feeling, and I left again. My grandfather was disgusted. I was never going to amount to much. Most folks felt that way about me. Thus I drifted along.
….The poet must plan wide. He must be willing to wash dishes if necessary or to do other things, and then do what he can with his writing as he can. It took me twenty years. I taught school on the side. I have done many things to make both ends meet. We have seen hard times financially—very hard times. But now I am getting all I need for our living, a comfortable one, through my poems . . .
Yes, there is lots of luck in it. Both my wife and I liked the long, quiet, sustained adventure of it all. Mrs. Frost went with me in the same spirit. I never allowed the spirit of I-must-get-a-reputation-or-die to take hold of me. The reward lies really in the end when people like what you write.
The Boston Traveler, April 11, 1921.