Possible Clues:

• Regular employment
• Something you shouldn't quit
• Nine-to-five gig
• ''Don't quit'' it
• Don't give it up if an audition goes badly ..
• Had a lot of patience after period of time at work to support extra-curricular passion
• "Don't quit your ___!"
• What a struggling rocker has
• Nine-to-fiver's employment
• Regular gig