El corazón heroico is a brilliant reading of the famous text The Thirty-Seven Stanzas of the Bodhisattva Practice. Based on her extensive experience, the author skillfully introduces readers to the practice of lojong, or mental training. The goal is to become a bodhisattva -- that "hero" or "heroine" who possesses an unwavering determination to free others from suffering. Jetsunma helps us deal with unstable worldly ties, both joyous and toxic, and offers us tools to unlock the ultimate essence of compassion and wisdom.