The continuous surge in the number of confirmed diagnoses and fatalities associated with corona virus disease 2019 (a.k.a. COVID-19) has caused debilitating economic, educational, social, and psychological issues. However, limited research has been done to explore psychological activities that mitigate the detrimental mental health impacts of this pandemic. This research addresses this gap through examining the effects of gratitude and kindness on life satisfaction, positive emotions, negative emotions, and COVID-19 anxiety. A three-week online experimental design was implemented to address research aims. The final sample comprised 107 Filipino undergraduate students who were randomly assigned to online gratitude, kindness, and control conditions. Results showed that there were significant differences on positive emotions after controlling for baseline wellbeing, gratitude, and kindness scores across all conditions (i.e., gratitude, kindness, and control). Participants in gratitude and kindness conditions had significantly higher scores on positive emotions than those in control condition. Findings point to the possible mental health benefits associated with promoting gratitude and kindness even in times of widespread health crisis. Mental health practitioners may consider investing in community-wide initiatives that maximize the scalability and cost-effectiveness of online mental health interventions to mitigate the detrimental impacts of COVID-19 pandemic in various societies.