In a world where relative and materialistic values flourish, and where there is confusion about how to educate children, it is urgent that we face this crisis of values to educate with love and guide our children. Effective upbringing from the earliest life cycle is the cornerstone that will give strength and sustenance to every person. During the first 21 years of life, while passing through infancy, childhood and adolescence, the human nuclear structure is created and personality is configured forever. For this reason, the keys to self-knowledge and the inalienable processes for each of the life cycles, obtaining the necessary tools to educate, guide and instruct the new generations more effectively in favor of forging and training better human beings. In this book you will find the keys to instill authentic and much-needed values for the 21st century and reinforce those according to the age of your children.