Working for a corporate, technical and stressful/busy job. We had hired this useless new guy that I had to babysit on top of trying to juggle everything else. He was nice enough but incompetent for what was supposed to be a specialist job. One day I randomly found out he was earning 10k more than I was.

I immediately took my manager into a meeting room and just went off. "I have lines of people at my desk while I'm trying to deal with all this shit, this fucking guy can't even figure out how to plug a cable in and he's getting paid 10k more than I am?!" etc, etc.

She listened to me blow off steam for a solid 10 minutes or so then started laughing. I look at her and ask what's funny. "He's also getting paid more than I am".

That was it, it was then I decided I'm done with this shit. I walked out of that room and applied for a similar job at another company, considerably better pay and less stress. A couple of weeks later I was out the door. When I started the new job, I felt like I had gone on holiday. In hindsight, best thing I've done.