the day job

a day job is the job you have to do to afford to do the work you want to do.
many good people worked in insurance companies as day jobs. franz kafka or wallace stevens for example. and also many interesting people were lawyers.
maybe if you do a job that is really EXTREMELY despicable it makes you more of a genius in your artistic work, because you start to despise yourself and this critical self-impeachment sharpens and alerts your senses and your consciousness even more and then you start to do what you feel you have to do with even more chutzpah and impudence and even more emphasis and vigor.