Psalm 139: 23 & 24 can be used as a prayer as well, asking the Holy Spirit to sort through our motives and intentions. We aren’t always the best judge of our own heart, but He is! “Search me, God, and know my heart; test me and know my concerns. See if there is any offensive way in me; lead me in the everlasting way.”
All of these verses bring reassurance to my heart and mind, especially when I am praying for direction. I’ve often asked Him to make my heart, my mind and my desires line up with His. Basically, to make me want what He wants for me! And to give me a distaste for anything that is not of Him.