Gewesen / Been Schon seit / Since Schreiben / Writing Vollzeit / Full-Time
I've been working since I was five!
I've been writing since I was 19.
I've been working since I'm 9 years old.
I have been working since I was 14, nonstop.
I had been writing professionally since 1988.
I have been writing poetry since 1975. My first poetry book was published in 1986.
I've been drinking and using since I was 13.
I knew when I was 10 that I wanted to act full-time.
Being a writer is not the point. Writing is.