In easy to understand language, this text describes how anyone, of any age or background, may consecrate their heart to Jesus, through Mary, using the celebrated method of St Louis de Montfort. Progressing through four successive themes over 33 days, and by way of daily scripture, guidance from St Louis's writings, sayings from the saints, reflections, resolutions and prayer, we are led to personal conversion and consecration of our heart and will to those of Jesus through his mother Mary.