Beating yourself up for something God has already forgiven does not make you more holy. It just makes you miserable. It makes you waste your life, ruled by regret.
We spend a lot of our time as Christians talking about who Jesus is. Maybe it's time for us to start listening to what Jesus has to say about who we are, too. We know that we are fearfully and wonderfully made, the image of God, and created for holiness. But what does that look like for each of us?