"Some trust in chariots, and some in horses: but we will remember the name of the Lord our God." (Psalm 20:7)
How do we know what we know? The temptation to rely on our common sense is a strong one. And rightfully so because, more often than not, that's pretty much all that's required to solve life's equations. To bail us out of minor scrapes and scraps. I find though, that Christlikeness doesn't necessarily flow from common sense. In fact, some of the harshest judgments leveled at our fellow human beings come from good old-fashioned common sense. It behooves us to rely on the Holy Spirit first and foremost in our everyday interactions. The sensitive person (if they've left their home) has developed a thick skin, yes. But it doesn't mean that at their core, they're not hurting and crying out for validation. For trust, love, a kind word. Things that common sense is blind to. Yes, it's common. We possess it in spades. But as the Holy Spirit is not seen by the world (John 14:17), and we have exclusive access to Him, we should be letting Him infuse our days and interactions. And He leaves the fragrance of Christ everywhere He's given free rein. Or is it reign? Either way.
"And the ass said unto Balaam, Am not I thine ass, upon which thou hast ridden ever since I was thine unto this day? was I ever wont to do so unto thee? And he said, Nay." (Numbers 22:20) Or is it "Neigh"?
Balaam was a prophet and he was so far gone from listening for and to God's voice that God had to speak to him through his beast of burden. Had not the donkey turned aside from Balaam's insistence and prodding to go further, the "Angel of the Lord", it says would have "slain" him. (22:33)
"And Elisha prayed, and said, Lord, I pray thee, open his eyes, that he may see. And the Lord opened the eyes of the young man; and he saw: and, behold, the mountain was full of horses and chariots of fire round about Elisha." (2 Kings 6:17)
If we could see the realm of angels, what would that do to our day-in-day-out existence? Would it cause us to press in to God more? Unfortunately, the "young man" in the above verse couldn't get his eyes (figuratively) off of acquiring material wealth and in spite of being the runner-up to Elisha (who had in turn received a "double portion" of Elijah's anointing, see 2 Kings 2:9-14), ended up stricken with a particularly nasty case of leprosy. That's the thing. God says "Not by might, nor by power, but by my Spirit, saith the Lord of hosts." (Zechariah 4:6) How much power do we really possess to affect the world in a grand and great measure? In and of ourselves, not much. How much power do the angels possess? That's what "Lord of hosts" means, by the way. The Lord of all the angels. Which He is. They're backed by all the power of Heaven to do God's will. And yet, if we're not going to abide by His program, His way, they're not able to do much of anything either. All that power that Gehazi (the young man) observed did nothing to keep him pressed in to God. It's "by [God's] Spirit" that things get done. Rewinding back, think about the power needed to change our habits. All the power in the world is powerless to get us to see and therefore please God. But this is the realm of the Holy Spirit to which we're referring. A plane in which we walk that we will remain blind to without acknowledging Him.
Don't think that there's some secret or just-so esoteric formula for following the Holy Spirit. He's gentler than we'd ever guess. And ever-present, I might add. Try this: Focus on Him throughout your day. Don't be afraid to cozy up to Him. To talk to and interact with Him as you would Jesus or the Father. I guarantee you that as you magnify the Holy Ghost, He'll show you how He's been there all along.