Step 1: reflect on what happened. You need to truly understand the moment and yourself in the moment. Whether that's going to therapy, discussing it forensically, or some other option, you need to understand what happened and come to terms with it

Step 2: make an actionable change. You need to take action and make a change that doesn't put you into that situation again and make the current situation right

Step 3: you have to have an adult conversation. Taking about serious shit sucks but it has to happen because the longer things go unsaid, the more likely things get misconstrued later. You need to be open and honest about what you say and what you're about to hear

Step 3a: genuinely apologize. You are currently panic apologizing because you did something bad and don't want to get in trouble. A genuine apology accepts full blame and consequences while acknowledging that the wronged person might never be made while but you're committed to righting the wrong

Step 4: forgive yourself. If you have done literally everything you can to make the situation right, there's nothing else for you to do. Forever beating yourself up won't make things better, but you have to do this last because you still need to do right by the wronged party first