Life expectancy for adults with Down syndrome has dramatically increased over the last 100 years. Many people with Down syndrome are now living into their 60's and 70's. Further, there has been a marked social shift in people with Down syndrome no longer living in large impersonal institutions but now living in the community, often within their family homes or independently. Children are becoming literate and adolescents are acquiring professions and hobbies. This integration into society results in a higher quality of life. Many previously published textbooks have reviewed the medical and psychological conditions associated with Down syndrome. This book aims to highlight the more positive aspects of the life of people with Down syndrome. Fruitful examples, such as the Special Olympics, camping, arts, digital literacy and citizenship actions are included. The book presents early childhood interventions, transition of children to adults, experience with PALS programs, the role of positive behaviour support and self-directed support, and finally optimal aging. The aim of this book is primarily to educate families, carers and professionals that people with Down syndrome can achieve excellent well-being in physical, mental and spiritual domains. One's ability to maximise their own well-being is a human right which also reduces risks and costs associated with mental illness. We hope this book highlights the importance for children and adults with Down syndrome to be seen as valued citizens of their community and allows their voices to be heard.