He keeps me.

Psalm 42 and 43 repeat this line multiple times in their short chapters: "Why are you down in the dumps, dear soul? Why are you crying the blues? Fix my eyes on God— soon I'll be praising again. He puts a smile on my face. He's my God."(Psalm 43:5 MSG)

From what I've studied and read, David was a pretty screwed up guy. He didn't have it all together like I would assume. He was pretty much hated by many and extremely prone to bouts of sadness. BUT! He was labeled a man after God's own heart. Even through all of his struggles,  he still chased after the love of God relentlessly. 

I want to be like King David. I want my love and hunger for God to propel me through each difficult moment. My soul may be crying the blues, but I'm fixed on God's goodness. And even though the sadness doesn't magically go away, I know I'll sing praises again. He is my God. He keeps me.