In "Anam Cara: A Book of Celtic Wisdom," John O'Donohue explores the importance of maintaining beauty in one's heart as a means to navigate through challenging periods while also appreciating joyful moments. He emphasizes that amidst life's struggles and uncertainties, having a reservoir of beauty can provide comfort and strength, allowing individuals to endure and thrive.

O'Donohue's wisdom encourages readers to cultivate an inner landscape that reflects beauty, which can serve as a refuge during tough times. This inner beauty not only aids survival but also enhances the experience of happiness, reminding us of the value of love and connection with ourselves and others.