For the enemy has pursued me;
he has crushed my life to the ground;
he has made me sit in darkness like those long dead.
Therefore my spirit faints within me,
      my heart within me is appalled.

I remember the days of old,
   I meditate on all that You have done,
     I muse on what Your hands have wrought,
  I stretch out my hands to You;
my soul thirsts for You like a parched land.

Psalm 143. 3-6

(antidote to despair:
remember, meditate on, muse on His faithfulness.
Keep a notebook of His faithfulness to you.)