The impact of bullying and cyberbullying is usually measured in terms of deficits. Most of the research that focuses on well-being measures absence of ill-being, rather than presence of well-being. This chapter provides an alternative view on well-being measuring tools that derives from the field of positive psychology. It introduces the concept of Subjective Well-Being, Psychological Well-Being, Authentic Happiness Model, Dual Continua Model, the Mental Health Spectrum and the Wellbeing Theory. Each of the approaches are reviewed and tools for measuring them are discussed.