Humility is nothing more, nothing less that truth. To know who I am, nothing more, nothing less before God. To see myself rightly. And when we see ourselves rightly in the presence of God we do not lay claim to what we have done to our many merits. We ask the one thing we need, mercy.
Bless the Lord, O my soul, and never forget all his benefits; it is he who forgives all your sins. Ps 102.2-3