[wadadadad]

I think there's a difference between being 'content' and being 'happy', where happy would lead to a smile, and content is more of a general satisfaction that may not lead to a smile. I would argue that being content is the minimum here rather than necessarily having the smile (but certainly a smile is much stronger and more noticeable of a sign); and that there are many more people who are content going to work than those who go with a smile.