Who can honestly say what they would do given a certain situation? The Lord may direct our path differently from what we think we may do. The just shall live by faith in the Son of God in leading them to do what He wants us to do.
I'll admit, believers do not always do what He has taught them to do, but those trusting Him to be led by Him, shall perform His will for they trust Him to enable them to do so.
Psalm 19:12 Who can understand his errors? cleanse thou me from secret faults. 13 Keep back thy servant also from presumptuous sins; let them not have dominion over me: then shall I be upright, and I shall be innocent from the great transgression. 14 Let the words of my mouth, and the meditation of my heart, be acceptable in thy sight, O Lord, my strength, and my redeemer.
Proverbs 16:9A man's heart deviseth his way: but the Lord directeth his steps.
Jeremiah 10:23 O Lord, I know that the way of man is not in himself: it is not in man that walketh to direct his steps. 24 O Lord, correct me, but with judgment; not in thine anger, lest thou bring me to nothing.
James 4:13 Go to now, ye that say, To day or to morrow we will go into such a city, and continue there a year, and buy and sell, and get gain: 14 Whereas ye know not what shall be on the morrow. For what is your life? It is even a vapour, that appeareth for a little time, and then vanisheth away. 15 For that ye ought to say, If the Lord will, we shall live, and do this, or that. 16 But now ye rejoice in your boastings: all such rejoicing is evil. 17 Therefore to him that knoweth to do good, and doeth it not, to him it is sin.