Dear Brother,here are a few links from New Advent to help you understand faith from the Catholic viewpoint Humility... But who gives us our humility, our faith, anything? Everything comes from the Father, including our ability to repent.
2Co 7:9 I now rejoice, not that you were made sorrowful, but that you were made sorrowful to the point of repentance; for you were made sorrowful according to the will of God, so that you might not suffer loss in anything through us.
Personally, I wouldn't say that the reason I'm a Christian is because of my humility. Instead, I'm a Christian and God is working to humble me. (He's putting in a bit of overtime on me.)