Where then is boasting?

The longer I walk with the Lord and dig deeper into his word, I am more and more confident in my inability and lack of understanding. The world continually says "Believe in yourself, you can do it." This mindset is not only foolish, it's unbiblical. The Word continually admonishes us to lean on and trust in him and not in ourselves. Prov 3:5 says "Trust in the Lord with all your heart and lean not on your own understanding." Even Paul who had a litany of qualifications and strengths according to the world, considered them "rubbish"(Phil 3:8).
It is God's ultimate intention and purpose that his glory is seen. Therefore he will never honor or bless anything that either retracts from his glory or gives it to another. It is in him "we live and move and have our being"(Acts 17:28). When we lose sight that he is the creator and ultimate source of even our very being, we begin to take glory for ourselves. Therefore, God in his mercy, goes out of his way to reveal to humanity our desperate need for him.
As I'm writing this, two ways in which God knocks us of the insecure foundation of ourselves come to mind. First and foremost is the Law. A man can often stand confidently in his own righteousness until his righteousness is brought to the Law. Rom 3:19 says "Now we know that whatever the law says, it says to those who are under the law, that every mouth may be stopped and all the world become guilty before God." The law strips man of any confidence in standing before God in his own merit and forces him to look outside himself for righteousness. As man looks to Christ for forgiveness and salvation, he is "justified freely by His(God's) grace through the redemption that is in Christ Jesus..." Rom 3:24.
Another way the Lord guides us from ourselves to him is by operating contrary to the understanding and ways of the world. 1Cor 1:27-29 "God has chosen the foolish things of the world to shame the wise, and God has chosen the weak things of the world to shame the mighty; and the base things of the world and the things which are despised God has chosen, and the things which are not, to bring to nothing the things that are, that no flesh should glory in his presence". Four times the Word says "The righteous shall live by faith." That means we are to live our lives based on a reality that is beyond our senses, feelings, and understanding, revealed to us through the Word of God. Again, we are forced to look away from ourselves, to trust in him, his word and his ability.
When we come to the place of abandoning self, and casting ourselves upon his righteousness, strength, and ability, we shift from and insecure, ever- changing foundation to the eternal all-powerful rock that is Christ. In this Paul wrote "But God forbid that I should boast except in the cross of our Lord Jesus Christ, by whom the world has been crucified to me, and I to the world" Gal 6:14. There is no room for boasting in ourselves, but only in him and his grace.