Yes, I recently posted about this very thing, although I don't have a deadline like a pension keeping me in the job. That would be a completely different mindset--both harder and easier, because it would be clearer to me that I HAVE to stay in the job until a certain date, but that in itself would make me feel more trapped and resentful. As it is I am definitely FI at my current very frugal spending level but really want more of a cushion. What I have found is that the more variety I'm able to incorporate into my life, the less burdened I feel by my job. I've been taking lots of short trips and also using my accumulated leave to take Wednesdays off, which is surprisingly helpful.
I will also say that I've been feeling like this for about three years now and as a result have mostly been doing only what I feel like doing and insisting on working from home, and have continued to get great reviews. I don't really understand it but I'm not the only person ever to experience this phenomenon so I would encourage you to give it a go.
Whatever you do, you should definitely stick it out for the pension. I so wish I had realized the value of a pension earlier in my career.