I think the psalmist experienced this and described it this way in Psalm 56, “Be merciful to me, oh God, for men hotly pursue me.  All day long they press their attack.  My slanderers pursue me all day long.  Many are attacking me in their pride.”  He continues in verse 5, “All day long they twist my words; they are always plotting to harm me.  They conspire, they lurk, they watch my steps, eager to take my life.” 

I imagine if this were true in your experience you probably would experience fear or be gripped with “angst,” as they say.  But what does the psalmist say?  How does he cope in such a circumstance?  He declares in verse 3, “When I am afraid, I will trust in you.  In God whose Word I praise, in God I trust, I will not be afraid.  What can mortal man do to me?”  In verses 10 and 11 he says, “In God whose Word I praise, in the Lord whose Word I praise.  In God I trust.  I will not be afraid.  What can man do to me?” 

I’d suggest that first of all you turn to God and cry out to Him.  Then go to His Word and allow it to encourage and challenge you, to give you hope and promises to strengthen you.  Trust it also to give you assurance that the One who is with you, if you’ve trusted in Christ, is greater than whoever is out there in the world (1 John 4:4).  In Him you can stand and be strengthened to live for His honor and glory.  Trust God.  Praise Him for His Word and by faith resist the enemy!