How to forgive yourself for cheating or lying?

Accept that you did this, make sure the person you cheated on (or with) and lied to knows that you did it and accept any judgment they have, and move on. You don't have to let them go, just know that they're human and deserve to experience things in their own way. You can't change what you've done, but you can move forward from it and become the better person you know you can be.

Honesty is always the best policy. However, if one is in a situation that involves them having to lie/cheat, then I think realizing and being aware that cheating/lying will never foster positive outlooks later in life. Once established, one can strive towards becoming a better version of themselves from that point on.

You take what you did/said and learn from it and move on. Everyone makes mistakes. It is how we all learn. Don't beat yourself up about it. You can go to the person and apologize if that helps. Explain to them why you did what you did. I am sure they will understand. And if they don't. I am sure you can move on without them. Or give them some time to think on it and they might come around to forgive you.

The first step is to make yourself accept the fact that you lied or cheated and then you can look into reasons why. There has got to be something that caused this to happen. Now humans aren't perfect and a lot of it is second nature but mabye you wanted to feel in control of something. Mabye you are having a difficult time in your current relationship and that was a way you decided to deal with it. Everyone's different.

Sometimes, lying or cheating appears to humans as a natural instinct. However, if you feel guilty about it, you will find it hard to forgive yourself. To forgive yourself, I recommend you find the source of why you cheated/lied and vow to yourself to never repeat it again, with equipping yourself with motivation.

Admitting you messed up is the first step and than being truthful to the person you wronged no matter how hard can clear you conscience

Just forgive and forget its over and done with so why live in the past your only damaging yourself :)

Understand that your past actions should not hold you back from doing good in the present or future. Use this as an opportunity to become a better person and prove to yourself that you can change.

I tell someone about what I did, especially my mom, after venting out it feels amazing and forgiveness happens automatically.

Know that everyone makes mistakes and that it is important to be kind with yourself. It is normal to feel angry with yourself and upset, but it is also important to know that it is ok to make mistakes.