With thousands of newly confirmed cases and deaths worldwide each day, the novel coronavirus and the disease it causes, COVID-19, are impacting every corner of the planet. Using behavioral insights to design simple messages that promote healthy behavior is essential to stop contagion, manage emotions, encourage handwashing, and when the time is right, help people gradually resume normal life. This policy note describes behavioral biases people may be exhibiting during the crisis and offers recommendations for how to overcome them. Most importantly, it offers practical examples for governments, as well as infographics ready for dissemination, that can be used to fight this pandemic.