This quote comes from Rollo May’s book on creativity The Courage To Create which is considered by many to be one of the best books on creativity.
“A dynamic struggle goes on within a person between what he or she consciously thinks on the one hand and, on the other, some insight, some perspective that is struggling to be born. The insight is then born with anxiety, guilt, and the joy and gratification that is inseparable from the actualizing of a new idea or vision.” – Rollo May
If you haven’t read The Courage to Create yet, I highly encourage you to check it out. You won’t be disappointed.