In 1860 he left the University to become a professional writer.
Since then he has been working as a professional writer.
From 1951 until his death he was a professional writer.
I am not an English teacher, but a professional writer.
He was also a professional writer throughout his working life.
Four were boys and three of them became professional writers.
They have found out that you are a professional writer who is known.
The editor, however, asked her if she was a professional writer.
Most professional writers have more ideas than time or energy to write about them.
He was the first professional writer to give me the courage to believe I might be one too.