It is good to be reminded that we are "but mere men" (Ps 9:20). Humility and a contrite dependency are key heart attitudes that are required to receive salvation from the Lord...or to receive His help as we walk with Him after salvation. This is what is meant by passages like Ps 51:17, Isa 57:15, Mat 6:14-15. Also we see this is part of the fruit of the Spirit Gal 5:22-26. On the other hand if we do not have these heart attitudes we cannot assume we are actually saved and thus indwelt by the Spirit - Rom 8:9-10, Gal 5:19-21.
What should we do if we examine ourselves and find that humility and a contrite dependency on God is not in our hearts? First know that if you realize your need it is a result of God's grace and that is good news! Then pray to God and ask for the change of heart that comes about only by the working of His Spirit (Jn 16:8 & 6:43-44) through humble trust in Christ.