This image comes from Chojnacka and Wiesner-Hanks' book entitled, "Ages of Woman, Ages of Man: Sources in European social history, 1400-1750. 

The authors describe this image as, "In this single-sheet broadside by the German printer Wolfgang Strauch, a family - probably the man who paid from the broadside, along with his wife and children - is depicted in prayer before the cross" (Chojnacka, Wiesner-Hanks 193). As the authors explain this image emphasizes the importance of family prayer. Family prayer was perhaps a bonding experience for families. With that inference, one might assume that family prayer led to happiness in the household.