Writing when you're sick

Sometimes I look at my Twitter and Facebook feed and get depressed. I look at the books being put out by my writer friends and the prizes being won by my colleagues and fellow creatives and I feel more than a twinge of frustration and despair. I wonder where their well of energy comes from, I wonder how they beat the obstacles - inside and outside of them - and think that I'll never catch up with them.

My health has not been the greatest the last few months. I'm tired all the time, my digesti...