What does the advice madam joanna give catherine in Catherine Called Birdy mean?

In "Catherine, Called Birdy," Madam Joanna advises Catherine to find joy in simple pleasures and not to let the constraints of her medieval society stifle her spirit. She encourages Catherine to find happiness in the small moments and to embrace her own desires and passions, rather than conforming to societal expectations. Ultimately, Madam Joanna's advice encourages Catherine to be true to herself and to seek fulfillment on her own terms.