Subjective well-being indicators, such as positive and negative emotions, life evaluations, and assessments of having purpose and meaning and life, are increasingly used alongside income, employment, and consumption measures to provide a more comprehensive view of human progress. These indicators are usually based on self-reported evaluations collected via nationally representative surveys conducted with thousands of individuals across countries and over time and provide meaningful information about perceived quality of life. Subjective well-being measures have several advantages but also challenges, which development scholars and practitioners need to carefully consider before introducing such metrics in the policy arena. This chapter prov...