Sleep is number one. The only reason that I placed the calming down of the nervous system ahead of sleep is that the same tools will help you sleep. None of the DOCC principles will be effective if you are not getting 7 or 8 hours of restful sleep. There are medication combinations that will allow you to sleep regardless of the level of your pain.
Not sleeping is NOT an option. Not one major decision regarding your spine care should be made until you feel rested during the day.