Background: Research has shown that positive psychology interventions can enhance subjective well-being and reduce depression. However, the efficacy of these programs with older adult populations has been minimally studied. The present study studied the short and long term impact of an intervention enhancing happiness and overall mental well-being in older adults. Methods: The Art of Happiness is an 8-week program conducted at 2 senior centers in the state of Delaware. Each 90-minute class examined a different topic; (1) defining happiness, (2) stress management, (3) reflecting on happiness, (4) compassion and human connection, (5) forgiveness, (6) transforming suffering, (7) mindfulness, and (8) humor. Pre, post, and 6 months post program questionnaires assessed participant subjective happiness, stress, life satisfaction, depression, mindfulness, arousal states, and general demographic and health information.