(Excerpt from Steal Like An Artist by Austin Kleon)
The right constraints can lead to your very best work. My favorite example? Dr. Seuss wrote The Cat in the Hat with only 236 different words, so his editor bet him he couldn’t write a book with only 50 different words. Dr. Seuss came back and won the bet with Green Eggs and Ham, one of the bestselling children’s books of all time.