Get more sleep and have protein for breakfast. According to Stanford professor Baba Shiv: "...stress dampens the ability to be creative. When you’re pressured or anxious, your brain is high on cortisol. It seeks safety, which means it will keep you focused on the beaten path. This is not the road to innovation. The right neurochemical cocktail for your best creative work is a high level of both serotonin and dopamine. This will produce a condition in which you are calm but energized. And what’s the best way to get that combination? A good night’s sleep."