We obey, not because we love God and His holiness, but because we think we have to do good things in order to come into His presence. This is nothing less than continuing in the law what was begun by faith because we are trying to justify ourselves by our works. Paul tells us that this cannot be our practice because the law cannot make us righteous. No matter what we do the law condemns us. For any of your works to be acceptable before God, they must be perfect.
Any point of failure brings about a curse.
Only in Christ, through faith in His righteousness, are we redeemed from the curse of the law. Your works will never give you even a hint of righteousness. The righteousness that brings blessing comes only through faith in Christ. The law brings only condemnation. That is why we must always trust in Christ's righteousness and not try to earn any merit on our own.