The greatest concern of the entire world is the sound andwholesome development of youngsters as they are thebackbone of the human resource pool of any nation. Soundness and integrity of any person lies deep in his/her holistic wellbeing that comprise physical and mental wellbeing.Mental wellbeing not only focus upon a single dimension of personality, it encompasses all the internal and external dispositions. It is the core of personal, intellectual, social, and emotional orientationsof a person,that affects overall development.This book is an effort to encompass all data and factsof multiple dimensions of mental wellbeing under anumbrella. This book presents the clear conception of mental wellbeing, its interaction with multipleaspects of human life, adjustment, satisfaction,its etiology and of course effective andcustomized preventive and curative measures to preserve and promote the mental wellbeing of youngsters.