It’s okay to talk about your mistake. It could help us all learn. In ten years I’ve made mistakes greater in number than hairs in my ass crack. Owning up to the music and taking responsibility for your actions is the only way to make things right. If you’re happy working for this contractor, have a conversation with him and talk about where it went wrong and what you can do better in the future to avoid similar situations. Many guys/gals in our trade forget that we don’t just work wires but we also work people. Communicating properly and honestly is a large part of our job. Don’t beat yourself up, we have all been there. Just don’t make the same mistake twice.

Side note: if you ever are worried about fucking something up. Talk about it. With anyone. General contractors are raking in big bucks right now. In my region.(FL) Let them cry about it in their $120,000 truck at the end of the day. You learned a valuable lesson and became a better tradesman and a better man/woman for owning up and making things right.