Indeed, I got promoted to a managerial position, which seemed a nice career opportunity for me, but my productivity and happiness tanked so much that when I had the opportunity two years later to go back to just being an engineer with no one waiting for my input, I just took it. This is how I learned that while I think I can be a decent manager, the skillset of managing people are totally different than being an engineer and it's very hard, at least for me, to context switch effectively between the two. And in that case I'd rather be an engineer.