(Proverbs 27:19 KJV) As in water face answereth to face, so the heart of man to man.
Water reflects. It can also be easily stirred to distort the image. Just as the water can distort the face, so the heart can distort the person.
Think about the things that can disturb the surface of the water. You can have a breeze. Someone can throw a rock. A fish can jump. All leave their mark. In time it will smooth out.
Our hearts can disrupt our whole being and our whole world. Anger and disappointment can influence our whole image. Bitterness can get down and do long term damage. These emotions and responses can work their way into our personalities and relationships. The Holy Spirit and God’s grace can work to help us repent of our sin and forgive the wrongs of others. Not only does this help, it is required.
So? Let it go. Pray for forgiveness. Pray for grace. Allow God to make your heart reflect the person He wants you to be, not the person your experience is molding.