The Lord saw that the wickedness of man was great in the earth, and that every intention of the thoughts of his heart was only evil continually. And the Lord was sorry that he had made man on the earth, and it grieved him to his heart. Genesis 6:5-6
It isn't just that you and I have regrets as we look back over our lives. Sadly, we are our regrets. Terrifyingly, we are God's regrets.
As the bridegroom rejoices over the bride,
so shall your God rejoice over you. Isaiah 62:5
It isn't just that God forgives us our evil and stupidity. Surprisingly, he counts us righteous in Christ. Astonishingly, he will present us to himself in splendor, without spot or wrinkle or any such thing and he will rejoice over us.