His Compassion Doesn’t Fail.

'oH  ghaH  vo'  joH'a'  muSHa'taH kindnesses  vetlh  maH  'oH  ghobe'  Soppu', because  Daj compassion  ta'be' fail.

 It is of the LORD's loving kindnesses that we are not consumed, because his compassion 

doesn’t fail.   Lamentations 3:22

Matthew Henry notes:

The prophet relates the more gloomy and discouraging part of his experience, and how he found support and relief. In the time of his trial the Lord had become terrible to him. It was an affliction that was misery itself; for sin makes the cup of affliction a bitter cup. The struggle between unbelief and faith is often very severe. But the weakest believer is wrong, if he thinks that his strength and hope are perished from the Lord.
Having stated his distress and temptation, the prophet shows how he was raised above it. Bad as things are, it is owing to the mercy of God that they are not worse. 

In the worst moment, when we realize this, that "Bad as things are, it is owing to the mercy of God that they are not worse" we may begin to have hope. On that, I reflect on Viktor Frankl's words:

Forces beyond your control can take away everything you possess except one thing, your freedom to choose how you will respond to the situation. You cannot control what happens to you in life, but you can always control what you will feel and do about what happens to you.  (Man's Search for Meaning)