Robert Fritz said this quote

“ Creators understand that their emotions are not necessarily a sign of the circumstances. They understand that in desperate circumstances they may experience joy, and in jubilant circumstances they may feel regret. They know that any emotion will change. But because emotions are not the centerpiece of their lives, they do not pander to them. They create what they create, not in reaction to their emotions but independent of them. On days filled with the depths of despair, they can create. On days filled with the heights of joy, they can create. ”