Always be joyful. 
  Never stop praying.  
Be thankful in all circumstances
for this is God’s will for you who belong to Christ Jesus.

1Thessalonians 5:16-18 NLT

God—His way is perfect;
    the word of the LORD is pure.
    He is a shield to all who take refuge in Him.  

Psalm 18:30 (HCSB)

Dear Lord thank you that whatever "it" is You can handle it!
You are my heavenly Father and I will trust in You 
because you are sufficient in all things.

The LORD your God is with you...
He will take great delight in you; 
He will quiet you with His love,
He will rejoice over you with singing.

Zephaniah 3:17

Do not be anxious about anything, but in every situation, by prayer and petition, with thanksgiving, present your requests to God. And the peace of God, which transcends all understanding, will guard your hearts and your minds in Christ Jesus.  
Philippians 4:6-7

Anxiety can be crushing and can distract us from what we're supposed to be doing but in this passage   we are told to present everything to God by prayer and petition, and to do so with thanksgiving so that we can stay focused on what we should be focusing on. 

Be anxious for nothing! 

I know the Lord is always with me.
      I will not be shaken, for he is right beside me.  
No wonder my heart is glad, and I rejoice.

Psalm 16:8-9 NLT