'A very stubborn person'

I like Keith Johnstone observation in Impro: Improvisation and Theatre that to be very stubborn to be an artist. I think this idea will give me a reason to keep trying to publish rather than giving in to despair and frustration after my next rejection. Who are they to tell me I can't be a writer? I know I'm doing what I'm meant to be doing; I can feel it.
Another thing I've learned about writing from Johnstone's book is about status. He talks about how pretty much all interactions between people (and often between people and objects) is about status. There are behavioural and vocal indicators of high or low status, and often people are jockeying for their preferred position. This will help me to write scenes between characters in my stories. It's something I knew, but hadn't put consciously into words before.
Johnstone's book is making me think about how similar writing fiction is to doing improv (something I've done in the past). The context/back-story of the characters is like the setting or other suggestions given by the audience to the improv actor. From that, the writer creates the interaction and moves the plot along with similar freedom and constraints as actors on stage builds the scene.