My problem in my old job was due to boredom. But it was more than that - I was bored and management didn't really take heed of what was wrong despite the feedb

My problem in my old job was due to boredom. But it was more than that - I was bored and management didn't really take heed of what was wrong despite the feedback that I have been giving at my annual performance review (where I did extremely well) and monthly meetings with the line manager. Even if I had the education and work experience with certain projects, politics ("X's department is doing that") and That's-not-your-day job-isms" got in the way. So in the end, I got bored and quit.