How do you...

Own up to your mistake, admit you did when you knew you weren't supposed to, and apologize if necessary.

What I would do is,try to forget about it. Do something like,make some food,read,listen to music or play video games. Just,try not to think about it. Unless,you wanna confront what happened and admit that you did it.

Do something you enjoy.

don't ask some1 who has no guilty conscience...

Acknowledge that you did something wrong and accept it. Promise that you'll never do it again.

Go on with life and know that what you do cannot be reversed. So stop feeling sorry for yourself.

Admit to myself that I had made a mistake then I move on with my life. It was a mistake, yes, but what more could I do to change that? not much. Everyone makes mistakes, just get over it and move on with your life, no point on dwelling on it.

Let it out, the more you hide the worse it gets. If you hide all of your emotion, it will destroy your soul. I am emotionless now because of it. Never hold it in.

Take it easy .
We are people and everybody does so many wrong things.
But now you must forgive yourself and promise that you won't do it again ;)