Separating the writing from your emotional state

My writing epiphany — which arrived decades into my writing career — was that even though there were days when the writing felt unbearably awful, and some when it felt like I was mainlining some kind of powdered genius and sweating it out through my fingertips, there was no relation between the way I felt about the words I was writing and their objective quality, assessed in the cold light of day at a safe distance from the day I wrote them. The biggest predictor of how I felt about my writing was how I felt about me. If I was stressed, underslept, insecure, sad, hungry or hungover, my writing felt terrible. If I was brimming over with joy, the writing felt brilliant.

Original source: Finding comfort in the chaos: How Cory Doctorow learned to write from literally anywhere