“If He does not support us, not one of us is safe from some gross sin. On the other hand, no possible degree of holiness or heroism which has ever been recorded of the greatest saints is beyond what He is determined to produce in every one of us in the end. The job will not be completed in this life: but He means to get us as far as possible before death” (C. S. Lewis, Mere Christianity).
That’s enough to keep us both humbled and honored.
Before you start to boast, remember that you have the capacity in you apart from grace to be as bad as any Hitler or Stalin.
Before you start to despair, remember that God is working in you such holiness (or even greater) than was ever found in any Mother Teresa or Florence Nightingale.
I have to remind myself every single day that apart from Jesus, I can do nothing. That anything good in me is God. Yet with God I can do all things.