Proverbs 3:5-6 invites us not to lean on our own understanding, but to trust instead in God's ability to lead us into the right paths we are to take.
5 Trust in the Lord with all your heart and lean not on your own understanding;
6 in all your ways submit to him, and he will make your paths straight.
At first glance this promise sounds wonderful, but in a deeper analysis, it's not quite obvious how God exactly makes our paths straight. For example, if our paths were to be made straight by the mere fact of studying the scriptures, then we shouldn't be observing the overwhelming amount of discrepancies in interpretations and doctrines across the diverse spectrum that is Christianity. If the same scriptures are studied by persons A and B, but A takes path X and B takes path Y, clearly there is something wrong: at the very least one of them must be wrong in at least one point, and so they cannot both be enjoying Proverbs 3:6 promise to its full measure (otherwise, they would be of a same mind and not adhering to mutually contradictory positions). Similarly, if our paths were to be made straight by hearing the teachings of respectable teachers of the word, we would face again the issue that discrepancies exist even among very honorable and renowned preachers.
All of this makes me think that the process by which God makes our paths straight unavoidably requires a direct supernatural intervention from God Himself. And this idea is reinforced in my mind by what Romans 8:14 says:
For all who are led by the Spirit of God are sons of God.
So, is Proverbs 3:5-6 telling us that we shouldn't overemphasize our intellectual capabilities in spiritual matters, but rather seek the full lead of the Holy Spirit? Is that the ultimate reason why we find so much discrepancy in Christianity, that most Christians are not having their paths fully made straight because they are not fully in tune with the supernatural lead of the Holy Spirit, relying instead on their own imperfect intellectual understanding of things?
By the way, an interesting related question: What role does the Holy Spirit play in hermeneutics?