If you make a mistake, hiding it, lying about it, gaslighting someone who calls you on it, is not going to do anything but make it worse.
If you make a mistake here is a fool proof step by step guide to HANDLING it:
1. Acknowledge it was a mistake- admit you messed up.
2. Forgive yourself. It's okay to make mistakes.
3. Feel whatever you're feeling, take a deep breath, and let the feelings go. Fear? Anger? Disappointment? Embarrassment? They're not going to serve you for the next steps. It's okay to react to any type of mistake with shame or guilt or tough emotions, but how you handle your feelings is your responsibility. Take charge. Let yourself feel. Name those feelings. Say how you're feeling out loud even to acknowledge it, sometimes that helps you pin down what you're feeling if you're not even sure. And then let those feelings flow out of you in a deep breath, and inhale- imagine calmness spreading through you like cool, refreshing water. Find your peace again.
4. Take accountability- accept the consequences. Understand that no matter what the consequences of the mistake- you will be okay. You can handle it, it may be hard, but you will come out the other side. Vocally acknowledge that you know you are responsible, acknowledge that there may have been things outside your control, but take responsibility for your part.
5. Listen. Try to understand how someone who may have been affected by your mistake feels by hearing them out. Put aside your defensiveness. You don't need to argue. Just let them speak their mind and let their own feelings out.
5. Repair. Apologize. Take action. Know that it will take more than an apology for true repair. Following all the steps above will help. But the most important thing you can do to repair is take action. Whether that's physically repairing something you broke, replacing it, or if that's not possible at least acknowledge the damage and admit you were wrong and vow to do better- don't just say that as an empty thought.
6. Learn from your mistakes and do not repeat them. Say how you plan to repair the mistake, and your plan for not repeating the mistake in the future.
7. Change your behavior. Stand by your word. Make your best effort to do better.
8. Be self reflective, self aware, but also aware of others so you can exercise empathy and be considerate.
9. You're not perfect, you may mess up again. Repeat these steps as necessary, but reflect on your patterns of behavior and if you can't break those patterns yourself, find some guidance on how to avoid making the same mistakes from someone with experience in changing behavior.
10. Treat people with kindness. That includes you.