Philippians 4:6-7 (NKJV)
6  Be anxious for nothing, but in everything by prayer and supplication, with thanksgiving, let your requests be made known to God;
7  and the peace of God, which surpasses all understanding, will guard your hearts and minds through Christ Jesus.

Psalm 139:14-24 (NKJV)
14  I will praise You, for I am fearfully and wonderfully made; Marvelous are Your works, And that my soul knows very well.
15  My frame was not hidden from You, When I was made in secret, And skillfully wrought in the lowest parts of the earth.
16  Your eyes saw my substance, being yet unformed. And in Your book they all were written, The days fashioned for me, When as yet there were none of them.
17  How precious also are Your thoughts to me, O God! How great is the sum of them!
18  If I should count them, they would be more in number than the sand; When I awake, I am still with You. 19  Oh, that You would slay the wicked, O God! Depart from me, therefore, you bloodthirsty men.
20  For they speak against You wickedly; Your enemies take Your name in vain.
21  Do I not hate them, O LORD, who hate You? And do I not loathe those who rise up against You?
22  I hate them with perfect hatred; I count them my enemies.
23  Search me, O God, and know my heart; Try me, and know my anxieties;
24  And see if there is any wicked way in me, And lead me in the way everlasting.

Psalm 139:23-24 (NLT2)
23  Search me, O God, and know my heart; test me and know my anxious thoughts.
24  Point out anything in me that offends you, and lead me along the path of everlasting life.