I mastered the machine. Now I'm responsible for the crew. Now what?

You did not ask to stop being the best at the machine. But you did ask, by taking this job, to stop being judged only by your own hands. Now you are judged by twelve pairs of hands you do not fully control. This will feel like a loss. It is not a loss. It is a different kind of work, and you have not yet trained for it. Here is the trap: you will want to keep proving yourself the way you know how — by outworking the crew, by doing their jobs better than they do, by staying at the machine when you should be walking the floor. This flatters you. It does not serve the crew. Your job now is attention, not output. Their safety, not your skill. Say this plainly to yourself until it stops stinging.