This is great advice, and to the OP, don’t feel bad. You’re really not an IT person of any caliber until you have experienced when I like to call the “Production Incident Experience”, or PIE. IT work is a job with unforseen consequences and hurdles, and we’ve all run into them at one point or another.
This being a learning experience, do what we’ve all done and learn from it. Now you can set up logging, whatif, sandbox instance, whatever you have to do.
You’re on the road to becoming a good programmer - just learn from your mistakes, do your research on best practices, ask intelligent questions, and in no time at all you’ll be writing one of these posts yourself.
One Week by Barenaked Ladies is a mindfuck, as is REMs It’s the End of the World As We Know It (And I Feel Fine).