If you dedicate your attention to discipline in your life you become smarter while you are writing than while you are hanging out with your pals or in any other line of work.
Are we to say that any individual who's on steroids that has an angry moment is due to steroids? What about the individual who gets angry and kills someone who's not on steroids? What do we blame it on now?
The whole universe is based on rhythms. Everything happens in circles, in spirals.