I stated a new job after living in Europe for 6 months for a change and immediately realised it is the same job I had back home, with the same destination. The mind numbing drain of the IT work juxtaposed with the non office lifestyle I had before taking the job and was literally destroying my soul. I hated it. I now joke that I became an alcoholic in 2 weeks, because I needed to be so blind drunk every night trying to justify how this will be good for my future. And the same as you, the worst part is that my new colleagues liked me and my managers lauded my on how fast I was, delivering great work. I spent the second weekend walking around trying to imagine other jobs, other people, the work culture. Eventually I decided that I could handle the work and push through it, but only if it guaranteed that I could hang out with interesting colleagues and work on interesting problems in the future. I went back my second week and tried to analyse what opportunities I would have given my current role and handed my resignation in after lunch. My boss was shocked, asked if I'd been poached or wanted to work on something else, but I had made up my mind and couldn't wait to try the next thing.

If that story doesn't bring any comfort because you have to stay, one approach is to be open about how you feel at a team meeting and see if anybody else is willing to timeshare the task. However, if this is the sort of task you will always face day-to-day, you will eventually have to decide if that's how you want to feel everyday.