A job is a job. It's a way to pay for a living, but that's it. Don't let it define your happiness. You work to live, not live to work. Work on what makes you happy. (I love my job, but this is a good reminder that it's not the only thing that matters).
It can be a bittersweet thing but it's good to listen to the truth rather than accept a comfortable lie. Even if you cant see something but know it's real deep down, believe it. Instincts can show a lot of true colors