You may be dealing with Anxiety or Depression or both, but know this: when that keeps you up at night, there is biology to it that God is fully aware of, because he knows how he made you. And some situations have caused that feeling, that emotion to spin in your brain, and He cares for you and loves you enough to know that situation too. He has provided you with tools and people who can help you hear him. And the beauty of it all is that all of it, all of it, is Spiritual because you are IN CHRIST. And HE DOES NOT go away.