British clinical psychologist Kirren Schnack explores the lasting impact of childhood experiences and family upbringing in her book, *Návod na spokojný život*. The work details four types of attachment styles and four parenting styles, examining how early experiences profoundly shape behavior. Schnack’s analysis reveals the connection between insecurities carried into adulthood and the dynamics of childhood. However, the book emphasizes that past experiences do not irrevocably dictate one's future. Through conscious effort and self-awareness, individuals can adopt healthier patterns of living and forge secure attachment. The book offers insight into understanding and overcoming the influence of early childhood on adult relationships.