As someone else who is self employed, I can work an average week of 60-100 hours a week, sometimes feeling there is nothing I do other than work - however I do have my routine which I use to make sure I get as much unbroken sleep as possible!

I simply switch off from work with some Sky TV repeat I have seen so many times I know them word for word and do nothing. I also make sure I do as little work on weekend daylight hours to allow me time for myself to do what I want - which is usually working on the car or spending time with my wife