Wisdom will reign...in me???

I have, of late, been more acutely aware of how I fall short of the mark (God's mark) in every aspect of my being. It's not a particular sin...it's more an awareness of sinfulness. Spurgeon's commentary on Psalm 51, verse 6, lifted a huge weight from my spirit. David wrote:
Behold, You desire truth in the inward parts,
And in the hidden part You will make me to know wisdom.
And Spurgeon writes: Behold. Here is the great matter for consideration. God desires not merely outward virtue, but also inward purity. The penitent's sense of sin is greatly deepened...as he...realizes how far he is from satisfying the divine demand...You desire truth in the inward parts. Reality, sincerity, true holiness, and heart fidelity, these are God's demands. He cares not for the pretense of purity; He looks to the mind, heart, and soul...To God, the inward is as visible as the outward and He rightly judges that the essential character of an action lies in the motive. And in the hidden part You will make me to know wisdom. The penitent feels that God is teaching him truth concerning his [the penitent's] nature...the love of the heart, the mystery of its fall, and the way of its purification, this hidden wisdom we must attain. It is a great blessing to BELIEVE that the Lord will make me to know wisdom. No one can teach our innermost nature except the Lord, and He can instruct us to profit. The Holy Spirit can write the law on our heart, and that is the sum of PRACTICAL wisdom. He can put the fear of the Lord within, and that is the BEGINNING of wisdom (Prov. 9:10). He can reveal Christ in us, and He is ESSENTIAL wisdom. Such poor, foolish, disarranged souls as ours WILL YET BE ORDERED ARIGHT, and TRUTH AND WISDOM WILL REIGN IN US. (ALL CAPS emphasis, mine.)