The best advice I ever had was: do something physical, something mental, and something spiritual every day.
For the physical, that can be as much as walking the dog at night or taking a brisk walk at lunch.
For the mental, you probably already have that covered since you're likely problem solving all day as a developer.
For the spiritual, you don't need to be religious, just take a few minutes out every day and either meditate, think about things, or, and this is my personal favourite, self-hypnotise [1].
For the physical, that can be as much as walking the dog at night or taking a brisk walk at lunch.
For the mental, you probably already have that covered since you're likely problem solving all day as a developer.
For the spiritual, you don't need to be religious, just take a few minutes out every day and either meditate, think about things, or, and this is my personal favourite, self-hypnotise [1].
[1] Since I have eczema I learnt about self-hypnotism from this book: "Skin Deep", http://www.amazon.co.uk/Skin-Deep-Mind-Program-Healthy/dp/09.... I'm sure there are plenty of others books that probably describe it better.
EDIT: P.S. Great blog by the way Michael. I don't agree with everything you say, but it gets me thinking every time.