I know Japan's always been a earthquake prone country as it sits above I guess four tectonic plates. Despite of going through hundreds of quakes each year, and to be get reminded almost every other day for a possible quake, not gonna be a easy task to keep your head calm. Your optimistic mentality comes handy in such situations.

Glad to know that the magnitude of the quake was less and it dealt no major damages. Take care friend! !LUV