What is it going to take for us to cry out to God? We need to realize that even in the depths, God is still in control! When we encounter ourselves in the depths, this can be the result of two things: the reality of living in a broken world or a consequence of our sin. 
In the depths, we realize we are helpless and hopeless without God. Just like Jonah realized that in the past and cried out to God, the same truth is for us today. Without the Lord we are nothing. Sometimes, God allows us to get into hopeless situations so we will realize how much we need Him, and so He will get the credit if we are delivered.
Finally, in the depths, we should realize that salvation belongs to the Lord. Like Jonah, we need to be desperate for God. We need Ebenezers in our lives to remind us of what God has done!