The prodigal son after wasting his life and inheritance thought better of it--“When he came to himself, he said, ‘How many of my father’s hired servants have more than enough bread, but I perish here with hunger!” (Luke 15:17)
Likewise, after Peter had been miraculously transported from prison outside the city walls, we read in Acts 12:11, he "came to himself, [and] said, 'Now, I am sure that the Lord has sent his angel and rescued me . . .'"
Several hundred years earlier, Nebuchadnezzar declared, "I . . . lifted my eyes to heaven, and my reason returned to me, and I blessed the Most High . . ." (Dan. 4:34). He did more than that if your read on further. But he didn't see anything right until his reason returned to him.
It's easy to see the commonality between these verses isn't it? In each case, whether the prodigal, Peter, or even Nebuchadnezzar, each one "came to himself" or their reasoning returned. Now, it is true that each arrived at this place from different positions. Nebuchadnezzar recovered from a divinely imposed captivity which reduced him to the level of a beast of the field, and the prodigal returned from a horribly profligate lifestyle. Peter's reasoning was much more civil, and by comparison almost inane, regaining his "mind" from a spiritually groggy condition.
Simply this. Each one's viewpoint of their true condition changed radically only after they'd come into their right mind or after having "come to their senses" we might say. So, can we conclude at least this from these three examples, that when one is in a sinful condition, and certainly when one is under the rebuke of God which lowers him to a beastly condition, and even when one is simply spiritually woozy, or slow that each is NOT in their right mind? Granted, Nebuchadnezzar's conditon is an extreme example which may not find very many parallels in our experience save for the divine consignment of some to reprobation spoken of in Romans chapter one. The prodigal's condition finds a myriad of parallels in society since it might be claimed that no one is ever in their right mind until God reveals himself savingly to them. The last example in Peter is common enough since we may assume every true believer has many occasions when it might easily be said of them, "He's just not seeing it; or she's missing all that God is doing in her life."
We can be so dull spiritually that when God is busily working all things according to his will, we see only our own interests. That's being close-minded. We need to pray that more believers will come into their right mind. We must remember that the lost cannot see rightly without such a divine release, their minds being as captured as their souls. And every now and then we read the story of one, like Legion in the Mark 5 who after having a multitude of demons cast out of him, sat clothed, calm and "in his right mind." That's salvation. And it seems only those who've received it can claim such clarity for such is part and parcel of their redemption, the cleansing of the mind as well as the soul.