Being imperfect IS sin. We’re stuck, and forgiveness is the only way out. That is the reason that Jesus took our place on the cross. I don’t expect Christians to enjoy the concept of karma but it fits: Jesus bore the full weight of everyone’s evil, He substituted Himself in the balancing of our bad karma.
Confession is the act of understanding that we make unloving choices all the time. We come before Jesus in prayer “with a broken and contrite heart” to ask His forgiveness, and we receive it.
That is the working definition of grace. If you have a Bible, it’s in Ephesians, chapter 2 verses 8, 9, and 10. Don’t skip verse 10! In fact just google the reference and you’ll get several choices to read from such as the King James version, and more modern translations. Don’t worry: GOD’s word is powerful enough to be read and moved by even in translation.
The Jewish prophet Isaiah wrote this (chapter 64 verse 6):
“We have all become like one who is unclean, and all our righteous deeds are like a polluted garment.”
He was criticizing a fallen-away nation, but the idea is clear, to wit: we as sinful beings are incapable of comparing ourselves to Holy GOD.
Martin Luther’s commentary on the passage is this:
“The most damnable and pernicious heresy that has ever plagued the mind of man is that somehow he can make himself good enough to deserve to live forever with an all-holy God.”
YMMV since the Catholic Church excommunicated him (since lifted, by the way) but the idea is pretty clear.