Not in acts of solemn worship or great crises only, but "in all thy ways;" and then God will make the "path" straight and even.

In all thy ways acknowledge him - Begin, continue, and end every work, purpose, and device, with God. Earnestly pray for his direction at the commencement; look for his continual support in the progress; and so begin and continue that all may terminate in his glory: and then it will certainly be to thy good; for we never honor God, without serving ourselves. This passage is well rendered in my old MS. Bible: Have trost in the Lord of all thin herte and ne lene thou to thi prudence: in all thi weys think hym, and he shal right rulen thi goyuges; ne be thou wiis anentis thiself. Self-suf ficiency and self-dependence have been the ruin of mankind ever since the fall of Adam. The grand sin of the human race is their continual endeavor to live independently of God, i.e., to be without God in the world. True religion consists in considering God the fountain of all good, and expecting all good from him.

In all thy ways acknowledge him,.... Or "know him" (l); the Lord: set him before thee; have him always in view; consider him as ever present with thee, observing every step thou takest; and take not one step without his leave, and without his advice; ask wisdom of him who gives liberally; consult his word, and make the Scriptures thy counsellors, or the men of thy counsel, as in Psalm 119:24; take him as your guide; observe the footsteps of his providence; follow the Lamb wheresoever he goes; walk not after the flesh, but after the Spirit; when things go cross and adverse, and not to your mind, submit to his sovereignty; and be still and know that he is God, that does all things right, for his own glory and his people's good, Psalm 46:10; and when things succeed, give him the glory of all; own his hand in it, and the bounty of it; acknowledge that all you have, in providence and grace, come from him;
and he shall direct thy paths; man cannot direct his own; no, not a man: this is a blessing from the Lord; who steps of his people, keeps the feet of his saints, and directs them aright in things temporal and spiritual, Jeremiah 10:23.
(l) "scito eum", Pagninus, Montanus.

ways-- (Psalm 1:1).
acknowledge--by seeking His wise aid (Proverbs 16:3; Psalm 37:5; Jeremiah 9:23-24).
direct--literally, "make plain" (compare Hebrews 12:13).