Every successful society sees her future in her young people. This book is therefore important for all young people, all who love young people, especially those involved in youth apostolate internationally and locally. We are in an ever changing world, where young people are either direct agents or victims of the change. It is only pertinent that the Church and all youth ministers should understand the changing world, discover the factors driving changing times and evangelize those factors, using them as interface to minister to young people. This is the only tested option for youth apostolate now and in the coming days. Successful youth apostolate in 21st century depends largely on discovering the dynamics proposed in this book, which is a fruit of seven years experience of ministering to over 20 million Catholic youths. If you feel the cold breeze of the changing times, join me in discovering the dynamics of youth apostolate and my proposed response to the changing times.