Re: If you screw up, say so and say how
“the customer likely knows how to fix the issue quickly, or at least the steps to fix the issue even if they take time”
Also, sometimes you (and the customer) find out that the work involved is too much egregiou effort and because they aren’t really using the thing you killed, decided to just let it be dead.
One of my mistakes were shutting down my computer for the day, clicking OK to the warning about shutting down and suddenly see my real desktop. I shut down a customer’s Exchange server and had to call the customer while waiting for the long shutdown time to complete. I leaned to read the warning that pop up when shutting down a computer as it might be a remote session that warns me about the dumb thing I’m about to do.