Eventually everyone needs a old night sleep. I know many people that have a difficult time getting rest. I have not had major problems doing that, but I have times where I wake up in the middle of the night an can't get back to sleep. At those times I just can't get my mind to stop thinking long enough to fall back to sleep. When that happens several nights in a row it "my flesh and my heart fail". I can feel my lack of sleep affecting my day and thus the people around me.
Or those of you that have advanced sleep disorders, I apologize for the simplicity of my solution. I have found my best defense to an overactive brain in the middle of the night is to pray. Speaking to my creator, sharing my concerns, expressing my joy, and listening to the spirit, are so soothing it sends me to sleep. I believe in the power of God. He can cure all things and heal us from anything. Sleeplessness is not any different. God is the strength of my heart. He is my portion forever. Praise God for his healing power and the ability to get a good nights sleep.