This chapter offers legal scholars a brief introductory survey of modern happiness research. It analyzes how happiness research can inform legal policy, and explains how and why happiness research differs from and is related to behavioral economics. The author develops two conditions under which law and policy should care more about experienced happiness versus remembered happiness. Connections are made between being happy, being ethical, and being mindful, while the chapter illustrates how happiness research applies and relates to negotiations and conflict resolution. Finally, the author considers how happiness research can improve legal education and legal practice.