too fixed in one particular type of job, activity, method, etc., and needing to change
No matter how hard we tried to improve the situation, it was as if we were badly stuck in a rut.
in a rut
living or working in a situation that never changes, so that you feel bored
I was stuck in a rut and decided to look for a new job.
(stuck) in a rut
C2 too fixed in one particular type of job, activity, method, etc., and needing tochange:
I need to change jobs - after 15 years here I feel I'm (stuck) in a rut.