Romano Guardini was one of the most important Italian-German priests, lecturers, theologians and writers of the 20th century. He dealt with the topics of liturgy, philosophy, anthropology, education and philosophy. He wrote numerous works, and one of the most significant was The Spirit of the Liturgy, which played a significant role in the Catholic renewal. Self-acceptance is another work in which Guardini emphasized the importance of personal development and satisfaction. Guardini dealt with important topics related to modernism and the crisis of contemporary society, and he mentioned this in the book The end of a modern world. In this work, I will deal with his methods and methods of upbringing and who all participates in the upbringing of a child and why it is important how to treat a child in order for him to have quality conditions for finding himself and understanding himself. We will talk about the importance of spiritual life. I will also mention how Romano Guardini had an influence on the Second Vatican Council and what his reflections are on religion and ways of life.