|With many thanks to Alan Vest for this image|
I like this remark by William Dalrymple in "My working day" series.
He is describing the final year of the four to five year project of writing a book:
"One year in four or five years you have to be completely eaten up by the book. If it is working, you are really dreaming your book, not as a figure of speech, but in a very literal sense. You are harnessing the power of your subconscious"
This perfectly describes the creative process, or one stage of it, and explains why it can be so draining.