An overview of a child's psychology, the processes a child's brain and body go through while becoming a young adult. All the factors that matter and are taken into account when it comes to studying child development. Its growth since child psychology was first mentioned in the history. The theories proposed by great psychologists which explain the process step by step and stage by stage. Dividing of the process into major categories of study. Division of the age-group of kids for a better understanding of every stage and of every process on each stage. Along with this an insight into the necessary actions to the better psychological condition of kids. The roles that must be played by parents, surroundings, environment, and society to keep a healthy psychology, to develop a healthy psychology in the first place. The importance of studying this matter subject in this day and age as well as the increasing scope that it has to provide for young men and women and all the exciting career opportunities it has to offer for anyone who is truly interested and ready for the hard work it requires.