Exactly. Some of the best inventions and ideas were indeed conceived by hard working people during the time they let themselves do “nothing” for a while.
During that time they had just given the space and time to their minds to leave the deterministic boundaries of everyday work and find the joy in life. And what they got in return was a kind of creativity that makes your heart beat faster and the urge to follow it.
This can only happen when you let yourself loose sometimes and when you treat life with respect — by examining as many aspects as possible, not just work.