What does it mean to live as a child of God? In this book, Fr. Piotr Rostworowski offers timeless advice and spiritual counsel to a nun under his direction, aimed at helping her live a life of perfect unity with God. In simple, loving, honest language, this holy father sets out clear guidance and practical methods for how to attain perfection. Likewise, the universality of the issues with which Fr. Rostworowski deals, issues ranging from how to overcome one's own will in temptation to recognizing the immensity of God's mercy and love, make this book a must-have for anyone seeking to deepen their friendship with the Lord and live as children of God. "You must not be afraid," says Fr. Rosworowski, "you simply have to trust and persevere. I think there is nothing wiser that you can do, and the Lord will do his part." Who will not benefit from advice such as this?