In an interview with The Creative Independent, Jonny Sunn, author and illustrator, offers
It’s related to that feeling of constantly needing to work on something or constantly needing something to fill your plate. I don’t know if I would say how we’re pressured to define ourselves by our work, or how we do define ourselves by our work, but there’s some relationship between how I personally identify who I am at the moment, to the stuff that I’m working on.