In those moments, it's hard even to pray. Things will take over until you have no breath in your lungs and no words on your lips. That's when Scripture comes along and gives you the wisdom and the strength to hold on for a while longer.
When I'm left wordless, there is always the Word.
I need this hope daily. Maybe you do, too.
 Know that wisdom is such to your soul;
if you find it, there will be a future,
and your hope will not be cut off.
(Proverbs 24:14 ESV)
 So we do not lose heart. Though our outer self is wasting away, our inner self is being renewed day by day.  For this light momentary affliction is preparing for us an eternal weight of glory beyond all comparison,  as we look not to the things that are seen but to the things that are unseen. For the things that are seen are transient, but the things that are unseen are eternal.
(2 Corinthians 4:16-18 ESV)
 God is not man, that he should lie,
or a son of man, that he should change his mind.
Has he said, and will he not do it?
Or has he spoken, and will he not fulfill it?
(Numbers 23:19 ESV)