If we set an example of how to social distance properly, others may follow the lead, and think, “Well, if they did it, then maybe I need to do it too.”
The other thing to do is to appeal to facts and people’s desire to protect themselves. The fact is that we’re all at risk of contracting the virus. And we’re all at risk of it really hurting us, even if we’re not old or unhealthy, as some people believe. If we can appeal to people’s sense of self-preservation, they may be more likely to take it seriously.