Thank you for sharing this moment in your life. It shows how working a program does not mean we become perfect. We get to take daily inventories and make corrections as we go along. This isn't a pass or fail type of thing; it's a work in progress. I was cringing as I read your post because I can completely understand what was in your head and how easy it is to go there. I'm so sorry you had a meltdown.
But I'm very impressed with how quickly you were able to identify the problem and get back on track. You didn't try to justify your actions. Clearly, your program is working for you.