I do not know if it the age that does the trick or the things he has seen.

Both and a few more things.

There are many things in the world to be positive over but the future remains unwritten (in my opinion) which means that if we want to create something better than we have now, we have to take life somewhat seriously. Of course, this can be done with a smile too but at times, it is going to require gritted teeth and a lot of sweat.

It is funny about the workplace. When I first came to Finland I started a 'Smile Finland' campaign in the office as people were largely sullen. Only an English guy joined. :D