A mark of a mature believer is their perspective of God’s grace and love. This is the lens through which they see the world in which they interact, as well as the lens through which they see their own humanity.
I can confidently say I’m not there yet, as my failures have shown me my immaturity in this area. I have a skewed view of God, defaulting to performance to earn His grace when I fail. I am learning to see these things in light of His great love as a father. I am also learning that mercy doesn’t involve performance, just as grace doesn’t either. Both are freely given based on the choice of the one who wants to share those gifts – out of love.