Robert,
I know the feeling.....I've been "Plant Manager" for ten years now. The longer I do it, the more I realize I'm no good at it. I was promoted because, like you, I'm great at making things, beating quoted times, helping co-workers, solving problems, perfect attendance.......But I suck and managing people, delegating, budgeting time....I can make a machine do whatever I want.....not so much with people. I've discussed this with my boss a few times before. He doesn't want to replace me. He would prefer that I figure out what I need to know to do the job and get on with it. I love the company and quitting is out of the question for me, but I dread my position more and more each day. Sometimes my boss shows his appreciation and that does help, but that's pretty rare anymore. Meanwhile I keep praying to God that I win the PowerBall and take an early retirement.
Hope it goes well for you,
Brian