I knew that I wanted to be a writer even before I knew exactly what being a writer entailed.

I always knew I wanted to be a writer.

I knew, always, what I wanted to be. Even before I had my first computer, I wanted to be a computer scientist.

No one inspired me to write, but writer Harlan Ellison terrified me into getting published.

I knew from an early age exactly what I wanted to do. I wanted to be a musician and that was it. It made life a lot easier knowing what I was aiming for.

They knew exactly what they were doing.